Professor David Stone
PhD, BEng, FIET
School of Electrical and Electronic Engineering
Professor in Electrical Engineering
Member of the Management Board of the Energy Institute URI at The University Of Sheffield
Electrical Machines and Drives Research Group
d.a.stone@sheffield.ac.uk
+44 114 222 5046
+44 114 222 5046
Full contact details
Professor David Stone
School of Electrical and Electronic Engineering
School of Electrical and Electronic Engineering
- Profile
-
I studied Electronic Engineering at the University of Sheffield from 1982 - 1985, and graduated with a 1st class BEng (Hons) before moving to Liverpool University to study my PhD.
I graduated from Liverpool University in 1989 with a PhD in Automatic Weld Penetration Control, having developed a vision system and power electronics capable of controlling the penetration of a TIG welding arc through the workpiece.
After graduating with a PhD, I joined the University of Sheffield as a member of academic staff in the Electrical Machines and Drives (EMD) Group where I have been working to date, having been promoted to Professor in 2013.
My research interests include Power electronics and Energy storage, and currently, through CREESA, we operate the largest grid connected lithium titanate electrical energy storage system in the UK.
- Qualifications
-
- PhD, University of Liverpool
- BEng, University of Sheffield
- FIET
- Research interests
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- Development of ‘smart’ battery packs for all-electric and hybrid-electric vehicles, based on both Li-based chemistries, Ni-MH and VRLA cells containing cell state-of-charge monitoring and conditioning electronics to extend the lifetime of the cells. Incorporation of observer techniques into state of function monitoring for cells to increase operation lifetime and consumer confidence in battery technology
- Investigation into second life operation of EV batteries for Grid support and localised energy storage
- High efficiency EV-contact less battery charging
- Modelling and control of novel fluorescent lamps to improve the efficiency of light generation. Incorporation of physical lamp models (based on electron energy level interactions) into both Simulink and spice based packages has led to novel lamp models based on the physical interactions within the plasma
- Design, modelling and digital control of high-order resonant converter topologies for high frequency switched mode power supplies for use in ‘white goods’, and concentrates on the analysis and design of high order resonant converter topologies, with the inclusion of piezzo electric transformers where possible
- Investigation into high frequency, high power, resonant converters for induction heating applications. Continuing work is now looking at the use of high frequency matrix converters (operating above 150kHz) for direct ac-ac conversion for heating applications
- Design and digital control of matrix converters for aerospace and sub-sea applications in specialist environments
- Power Electronics Packaging for high temperature and harsh environments, including high temperature gate drive design and thermal management of converters
- High voltage power supplies
- Grid connected energy storage first and second life battery packs on the grid for grid support
- Hybrid energy storage systems - combinations of flywheels & batteries for optimal storage
- Publications
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Journal articles
- Model-based Luenberger state observer for detecting interturn short-circuits in PM machines. IEEE Transactions on Transportation Electrification. View this article in WRRO
- Extracting dashcam telemetry data for predicting energy use of electric vehicles. Transportation Research Interdisciplinary Perspectives, 27, 101189-101189.
- Planning a hybrid battery energy storage system for supplying electric vehicle charging station microgrids. Energies, 17(15). View this article in WRRO
- Partial Discharge in Silicone Gel on Power Module Substrates in High-Humidity Conditions. IEEE Transactions on Dielectrics and Electrical Insulation.
- Novel generic fault model considering fundamental and PWM current components of PM machines with inter-turn short-circuit. IEEE Transactions on Power Electronics. View this article in WRRO
- Techno-economic planning of a fully renewable energy-based autonomous microgrid with both single and hybrid energy storage systems. Energies, 17(4). View this article in WRRO
- A Novel PWM Strategy Capable to Operate in Overmodulation Range with Low Switching-to-Fundamental Frequency Ratio. IEEE Transactions on Transportation Electrification, 1-1.
- Rural EV charging: The effects of charging behaviour and electricity tariffs. Energy Reports, 9, 2321-2334.
- Soft switching voltage regulation for inductorless piezoelectric transformers: a cyclic mode analysis. IEEE Transactions on Power Electronics.
- Prescriptive Grid-Tied Inverter Control. IEEE Journal of Emerging and Selected Topics in Power Electronics, 1-1.
- Assessing the economic impact of introducing localised PV solar energy generation and energy storage for fleet electrification. Energies, 16(8).
- A Space Vector Modulation Strategy for PMSMs Operating at Low Switching-to-Fundamental Frequency Ratio. IEEE Transactions on Industrial Electronics, 1-10.
- A Position Error Correction Method for Sensorless Control of Dual Three-Phase Permanent Magnet Synchronous Machines. IEEE Transactions on Industry Applications.
- Improved sensorless control method and asymmetric phase resistances determination for permanent magnet synchronous machines. IEEE Transactions on Industry Applications, 1-1.
- Circuit Simulator Compatible Model for the Ring-Dot Piezoelectric Transformer. Journal of Microelectromechanical Systems, 1-14. View this article in WRRO
- Higher 2nd life lithium titanate battery content in hybrid energy storage systems lowers environmental-economic impact and balances eco-efficiency. Renewable and Sustainable Energy Reviews, 152. View this article in WRRO
- Development and evaluation of empirical models for the estimation of hourly horizontal diffuse solar irradiance in the United Kingdom. Energy, 122820-122820.
- An online position error correction method for sensorless control of permanent magnet synchronous machine with parameter mismatch. IEEE Access, 9, 135708-135722.
- Technical and economic feasibility of increasing tram system efficiency with EV batteries. Transportation Research Part D: Transport and Environment, 91. View this article in WRRO
- Generalized Predictive DC-Link Voltage Control for Grid-Connected Converter. IEEE Journal of Emerging and Selected Topics in Power Electronics.
- Study on noise and disturbance issues of generalized predictive speed control for permanent magnet synchronous machines. IET Electric Power Applications, 15(1), 63-78.
- Suppressing leakage current for cascaded H-bridge inverters in renewable energy and storage systems. IEEE Transactions on Industrial Electronics. View this article in WRRO
- Performance Investigation of Consequent-Pole PM Machines with E-core and C-core Modular Stators. IEEE Transactions on Energy Conversion, 1-1. View this article in WRRO
- Influence of spurious modes on the efficiency of piezoelectric transformers : a sensitivity analysis. IEEE Transactions on Power Electronics. View this article in WRRO
- Multivariable generalised predictive control with measurement noise rejection and speed ripple mitigation for PMSM drives. IET Power Electronics, 13(12), 2607-2617.
- Modelling of phase-shift modulated bidirectional CLLC resonant converter. IET Power Electronics, 13(12), 2628-2637.
- A transformerless single-phase multilevel converter for grid-tie renewable energy systems. Energy Reports, 6, 70-75.
- Scaling effect on electromagnetic performance of surface mounted permanent magnet Vernier machine. IEEE Transactions on Magnetics. View this article in WRRO
- Resonant current estimation and phase-locked loop feedback design for piezoelectric transformer-based power supplies. IEEE Transactions on Power Electronics. View this article in WRRO
- A low cost, rapid impedance measurement technique suitable for Li-ion health diagnosis in battery energy storage systems. International Journal of Smart Grid and Clean Energy, 9(2), 346-356. View this article in WRRO
- Increasing urban tram system efficiency, with battery storage and electric vehicle charging. Transportation Research Part D: Transport and Environment, 80. View this article in WRRO
- Equivalent circuit parameter extraction of low-capacitance high-damping PTs. Electronics Letters. View this article in WRRO
- A Simple Sensorless Position Error Correction Method for Dual Three-Phase Permanent Magnet Synchronous Machines. IEEE Transactions on Energy Conversion, 1-1.
- Using power factor to limit the impact of energy storage on distribution network voltage. International Journal of Smart Grid and Clean Energy, 727-736.
- Practical observations of loss-of-mains nuisance tripping of fast acting energy storage. International Journal of Smart Grid and Clean Energy, 473-484.
- PLL controller for achieving zero-voltage switching (ZVS) in inductorless half-bridge drive piezoelectric transformer resonant power supplies. Journal of Engineering, 2019(17), 3639-3642. View this article in WRRO
- Comparative investigation of stator-mounted permanent magnet machines under fault conditions. The Journal of Engineering, 2019(17), 4241-4246. View this article in WRRO
- An analysis of the influence of high-frequency ripple currents on dynamic charge acceptance in lead-acid batteries. Journal of Energy Storage, 22, 27-35. View this article in WRRO
- Scheduling of Grid Tied Battery Energy Storage System Participating in Frequency Response Services and Energy Arbitrage. IET Generation, Transmission and Distribution. View this article in WRRO
- Quantitative Power Loss Analysis and Optimisation in Nth-order Low Voltage Multilevel Converters. IET Power Electronics. View this article in WRRO
- Performance comparison between consequent-pole and inset modular permanent magnet machines. The Journal of Engineering, 2019(17), 3951-3955. View this article in WRRO
- Practical Current Distribution Measurement Systems for Lead Cells. IEEE Transactions on Instrumentation and Measurement, 68(9), 3151-3165.
- Automated design tools for piezoelectric transformer-based power supplies. The Journal of Engineering, 2019(17), 4163-4166. View this article in WRRO
- Combined Multi-Physics Model of Switched Flux PM Machines under Fault Operations. IEEE Transactions on Industrial Electronics. View this article in WRRO
- A unique pulse width modulation to reduce leakage current for cascaded H-bridge inverters in PV and battery energy storage applications. Energy Procedia, 151, 84-90. View this article in WRRO
- A Battery Energy Management Strategy for U.K. Enhanced Frequency Response and Triad Avoidance. IEEE Transactions on Industrial Electronics, 65(12), 9509-9517.
- A hybridised framework combining integrated methods for environmental Life Cycle Assessment and Life Cycle Costing. Journal of Cleaner Production, 168, 846-866. View this article in WRRO
- Demagnetization Withstand Capability Enhancement of Surface Mounted PM Machines Using Stator Modularity. IEEE Transactions on Industry Applications. View this article in WRRO
- On the impact of current generation commercial gallium nitride power transistors on power converter loss. ELECTRONICS LETTERS, 53(22), 1487-1488. View this article in WRRO
- Magnetic tomography for lead acid batteries. Journal of Energy Storage, 12, 1-10. View this article in WRRO
- Experimental analysis of Dynamic Charge Acceptance test conditions for lead-acid and lithium iron phosphate cells. Journal of Energy Storage, 12, 55-65. View this article in WRRO
- Novel Dual-Phase-Shift Control With Bidirectional Inner Phase Shifts for a Dual-Active-Bridge Converter Having Low Surge Current and Stable Power Control. IEEE Transactions on Power Electronics, 32(5), 4095-4106.
- A systematic review of lumped-parameter equivalent circuit models for real-time estimation of lithium-ion battery states. Journal of Power Sources, 316, 183-196. View this article in WRRO
- Real-time temperature estimation in a multiple device power electronics system subject to dynamic cooling. IEEE Transactions on Power Electronics, 31(4), 2709-2719. View this article in WRRO
- Critical Design Criterion for Achieving Zero Voltage Switching in Inductorless Half-Bridge-Driven Piezoelectric-Transformer-Based Power Supplies. IEEE Transactions on Power Electronics, 31(7), 5057-5066.
- Measurement and Characterization Technique for Real-Time Die Temperature Prediction of MOSFET-Based Power Electronics. IEEE Transactions on Power Electronics, 31(6), 4378-4388. View this article in WRRO
- Real-Time Prediction of Power Electronic Device Temperatures Using PRBS-Generated Frequency-Domain Thermal Cross Coupling Characteristics. IEEE Transactions on Power Electronics, 30(6), 2950-2961. View this article in WRRO
- Modular Permanent-Magnet Machines With Alternate Teeth Having Tooth Tips. IEEE Transactions on Industrial Electronics, 62(10), 6120-6130. View this article in WRRO
- Investigation on Operational Envelops and Efficiency Maps of Electrically Excited Machines for Electrical Vehicle Applications. IEEE Transactions on Magnetics, 51(4), 1-10.
- Spatially Resolved Measurements of Magnetic Fields Applied to Current Distribution Problems in Batteries. IEEE Transactions on Instrumentation and Measurement, 64(4), 951-958. View this article in WRRO
- Iron Loss Calculation in Permanent Magnet Machines Under Unconventional Operations. IEEE Transactions on Magnetics, 50(11).
- Improved bandwidth and noise resilience in thermal impedance spectroscopy by mixing PRBS signals. IEEE Transactions on Power Electronics, 29(9), 4817-4828.
- Estimation of transportation battery second life for use in electricity grid systems. IEEE Transactions on Sustainable Energy, 5(3), 795-803.
- Analysis and Design of LLC Resonant Converters With Capacitor–Diode Clamp Current Limiting. IEEE Transactions on Power Electronics, 30(3), 1345-1355.
- Influence of Flux Gaps on Electromagnetic Performance of Novel Modular PM Machines. IEEE Transactions on Energy Conversion, 29(3), 716-726.
- Comparative Studies of Modular and Unequal Tooth PM Machines Either With or Without Tooth Tips. IEEE Transactions on Magnetics, 50(7), 1-10.
- Required Cauer network order for modelling of thermal transfer impedance. Electronics Letters, 50(4), 260-262.
- Evaluation of UltraBattery™ performance in comparison with a battery-supercapacitor parallel network. Journal of Power Sources, 226, 191-201.
- Developing pathways for energy storage in the UK using a coevolutionary framework. Energy Policy.
- Parameter estimation for condition monitoring of PMSM stator winding and rotor permanent magnets. IEEE Transactions on Industrial Electronics, 60(12), 5902-5913.
- Active current ripple cancellation in parallel connected buck converter modules. IET Power Electronics, 6(4), 721-731.
- Predicting the zero-voltage switching profiles of half-bridge driven inductor-less piezoelectric transformer-based inverters. IET Power Electronics, 5(7), 1068-1073.
- Analysis of inductorless zero-voltage-switching piezoelectric transformer-based converters. IEEE Transactions on Power Electronics, 27(5), 2471-2483.
- Arbitrary waveform power controller for thermal measurements of semiconductor devices. Electronics Letters, 48, 400-402.
- Willenhall Energy Storage System: Europe's largest research-led lithium titanate battery. Engineering & Technology Reference, 1(1).
- Review of variable-flux permanent magnet machines. Journal of International Conference on Electrical Machines and Systems, 1(1), 23-31.
- Determining the ZVS operating locus for half-bridge driven inductor-less piezoelectric transformer supplies using cyclic-modelling. IET Power Electronics, 5(7), 1068-1073.
- Analysis of dual-output resonant power converters through use of linear load approximations. IEEE Transactions on Power Electronics, 27(9), 4051-4059.
- Modelling of VRLA batteries over operational temperature range using pseudo random binary sequences. Journal of Power Sources, 207, 56-59.
- Review of Variable-flux Permanent Magnet Machines. Journal of international Conference on Electrical Machines and Systems, 1(1), 23-31.
- Battery parameter identification with pseudo random binary sequence excitation (PRBS). Journal of Power Sources, 196(22), 9398-9406.
- Utilizing existing aircraft wound field generators for starter-generators. IEEE Transactions on Aerospace and Electronic Systems.
- Hybrid stand-alone renewable energy system with high fuel-cell efficiency and unity power factor. 2011 IEEE PES Conference on Innovative Smart Grid Technologies - Middle East.
- Grid connected PVs & Wind Turbine with a wide range of reactive power control and active filter capability. 2011 2nd IEEE PES International Conference and Exhibition on Innovative Smart Grid Technologies.
- Describing function model of series resonant inverter with current limiting diode-clamp. Electronics Letters, 47(25), 1363-1364.
- Electrical modification of combustion and the affect of electrode geometry on the field produced. Modelling and Simulation in Engineering.
- Low-cost solar emulator for evaluation of maximum power point tracking methods. Electronics Letters, 47(3), 208-209.
- Hamel locus design of self-oscillating DC-DC resonant converters. IET Power Electronics, 3(1), 86-94.
- Compensation of nonlinearities in diode-clamped multilevel converters. IEEE Transactions on Industrial Electronics, 57(8), 2651-2658.
- Frequency reduction schemes for back-to-back connected, diode-clamped multilevel converters. IET Power Electronics, 3(1), 65-74.
- New battery model and state-of-health determination through subspace parameter estimation and state-observer techniques. IEEE Transactions on Vehicular Technology, 58(8), 3905-3916. View this article in WRRO
- A physically based fluorescent lamp model for a SPICE or a simulink environment. IEEE Transactions on Power Electronics, 24(9), 2101-2110. View this article in WRRO
- Improved rotor-position estimation by signal injection in brushless AC motors, accounting for cross-coupling magnetic saturation. IEEE Transactions on Industry Applications, 45(5), 1843-1850.
- Analysis of CLL voltage-output resonant converters using describing functions. IEEE Transactions on Power Electronics, 23(4), 1772-1781.
- Self-oscillating control methods for the LCC current-output resonant converter. IEEE Transactions on Power Electronics, 23(4), 1973-1986.
- Analysis and control of dual-output LCLC resonant converters with significant leakage inductance. IEEE Transactions on Power Electronics, 23(4), 1724-1732. View this article in WRRO
- Self-oscillating control of a DC-DC resonant converter using a hysteretic relay. ISAST Transactions on Electronics and Signal Processing, 2(3), 70-75.
- Normalized analysis and design of LCC resonant converters. IEEE Transactions on Power Electronics, 22(6), 2386-2402.
- Automated design of LCC resonant converters using a genetic algorithm employing a describing function equivalent circuit converter model. ISAST Transactions on Electronics and Signal Processing, 1(1), 33-37.
- Automated design of LCC resonant converters using a genetic algorithm employing a describing function equivalent circuit converter model. ISAST Transactions on Electronics and Signal Processing, 1(1), 33-37.
- Methodologies for the design of LCC voltage-output resonant converters. IEE Proceedings: Electric Power Applications, 153(4), 559-567.
- The parallel combination of a VRLA cell and supercapacitor for use as a hybrid vehicle peak power buffer. Journal of Power Sources, 147(1-2), 288-294.
- Medium pressure mercury discharge for use as an intense white light source. Journal of Physics D: Applied Physics, 38(17), 3208-3216.
- CLL resonant converters with output short-circuit protection. IEE Proceedings: Electric Power Applications, 152(5), 1296-1306.
- A dynamic conductance model of fluorescent lamp for electronic ballast design simulation. IEEE Transactions on Power Electronics, 20(5), 1178-1185. View this article in WRRO
- Nonlinear observers for predicting state-of-charge and state-of-health of lead-acid batteries for hybrid-electric vehicles. IEEE Transactions on Vehicular Technology, 54(3), 783-794.
- Rapid design of LCC current-output resonant converters with reduced electrical stresses. Electronics Letters, 41(6), 365-366.
- Matrix converters for sensorless control of PMSMs and other auxiliaries on deep-sea ROVs. IEE Proceedings: Electric Power Applications, 152(2), 382-392.
- Design oriented analysis of fourth-order LCLC converters with capacitive output filter. IEE Proceedings: Electric Power Applications, 152(2), 310-322.
- A dynamic collisional-radiative model of a low-pressure mercury-argon discharge lamp: A physical approach to modeling fluorescent lamps for circuit simulations. IEEE Transactions on Power Electronics, 19(4), 1117-1129.
- Relative enhancement of near-UV emission from a pulsed low-pressure mercury discharge lamp, using a rare gas mixture. Journal of Physics D: Applied Physics, 37(12), 1630-1638.
- Design of robust fuzzy-logic control systems by multi-objective evolutionary methods with hardware in the loop. Engineering Applications of Artificial Intelligence, 17(3), 275-284.
- Analysis of 4th-order LCLC resonant power converters. IEE Proceedings: Electric Power Applications, 151(2), 169-181.
- A describing function for resonantly commutated H-bridge inverters. IEEE Transactions on Power Electronics, 19(4), 1010-1021.
- Analysis of voltage output LCC resonant converters, including boost mode operation. IEE Proceedings: Electric Power Applications, 150(6), 673-679.
- Cyclic-averaging for high-speed analysis of resonant converters. IEEE Transactions on Power Electronics, 18(4), 985-993.
- Dynamic load impedance matching for induction heating systems. COMPEL Journal, 22(1), 30-38.
- Early results from a systems approach to improving the performance and lifetime of lead acid batteries. Journal of Power Sources, 116(1-2), 110-117.
- High-speed analysis of resonant power converters. IEE Proceedings: Electric Power Applications, 150(1), 62-70.
- Stress analysis of fourth-order LLCC resonant converters. Electronics Letters, 38(24), 1585-1586.
- FDTD modeling of heatsink RF characteristics for EMC mitigation. IEEE Transactions on Electromagnetic Compatibility, 44(3), 458-465. View this article in WRRO
- A reliable, highly optimized, lead-acid battery (RHOLAB) for affordable HEV’s – a foresight vehicle project. Transactions of the Society of Automotive Engineers (SAE 2002 Transactions – Journal of Passenger Cars: Electronic and Electrical systems), 3(7), 809-833.
- Erratum: State-variable modelling of LCC voltage-output resonant converters (Electronics Letters (2001) 37:17 (1065-1066)). Electronics Letters, 37(22), 1372.
- State-variable modelling of LCC voltage-output resonant converters. Electronics Letters, 37(17), 1065-1066.
- Minimizing EMI from heat sinks. Compliance Engineering, 17(3).
- Rotor loss in permanent-magnet brushless ac machines. IEEE Transactions on Industry Applications, 36(6), 1612-1618.
- Modelling and multivariable control of a gearless, electrically actuated vibrator. IEE Proceedings: Electric Power Applications, 147(5), 345-352.
- Novel, three phase, unity power factor modular induction heater. IEE Proceedings: Electric Power Applications, 147(5), 371-378.
- Amplitude and frequency control of a vibratory pile driver. IEEE Transactions on Industrial Electronics, 47(3), 623-631.
- Relative enhancement of near-UV emission from a low-pressure mercury-rare-gas discharge lamp, for an LCD backlighting application. Measurement Science and Technology, 11(5), 547-553.
- Rotor Loss in Permanent Magnet AC Machines. IEEE Transactions on Industrial Applications (IA), 36(6), 1612-1618.
- Software waiting loop length control: Technique for reduction of radiated EMI from microprocessor-based PWM drive system. Electronics Letters, 33(22), 1855-1856.
- Application of FD-TD to the prediction of RF radiation from heatsinks. Electronics Letters, 33(17), 1443-1444.
- Effect of carrier frequency modulation of PWM waveforms on conducted EMC problems in switched mode power supplies. EPE Journal (European Power Electronics and Drives Journal), 5(3-4), 32-37.
- The effect of carrier frequency modulation of PWM waveforms on conducted EMC problems in switched mode power supplies. European Power Electronics Journal, 14(2), 91-98.
- Easing radiated EMC problems with spread-spectrum modulation of computer clock signals. Electronics Letters, 31(24), 2072-2074.
- Effect of spread-spectrum modulation of switched mode power converter PWM carrier frequencies on conducted EMI. Electronics Letters, 31(10), 769-770.
- Sensor automated frontface weldbead area control. Measurement Science and Technology, 5(2), 93-99.
- Sensor for automated front face weldbead area control. Measurement Science and Technology, 3(3), 263-269.
- Electromagnetic interference considerations for automated welding cells. Transactions of Institute or Measurement and Control, 14(2), 91-98.
- Sensor for automated weldbead penetration control. Measurement, Science and Control, 1(11), 1143-1148.
- Sizing a Renewable-Based Microgrid to Supply an Electric Vehicle Charging Station: A Design and Modelling Approach. World Electric Vehicle Journal, 15(8), 363-363.
- A data-driven travel demand model to predict electric vehicle energy consumption: focusing on the rural demographic in the UK. Transportation Planning and Technology, 1-25.
- EV’s as energy storage on urban light rail systems — A synergy of requirements. Energy Reports, 9, 467-476.
- Comparison of BSPT and PZT Piezoelectric Ceramic Transformers for High Temperature Power Supplies. Advanced Engineering Materials.
- Comparative Study of Dual PM Vernier Machines. World Electric Vehicle Journal, 12(1), 12-12.
- Mechanically actuated variable flux IPMSM for EV and HEV applications. World Electric Vehicle Journal, 6(3), 684-695.
- Sustainable City: Energy Usage Prediction Method for Electrified Refuse Collection Vehicles. Smart Cities, 3(3), 1100-1116.
Conference proceedings papers
- Analysis of Power Requirements for Workplace EV Chargers. 2024 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM) (pp 38-41), 19 June 2024 - 21 June 2024.
- Understanding The Rural Demographics Need For Electric Vehicles. Proceedings of the 28th Annual Logistics Research Network Conference, 6 September 2023 - 8 September 2023.
- Charging Urban Fleet Electric Vehicles Via Light Rail System Power Grids. Proceedings of the 28th Annual Logistics Research Network Conference, 6 September 2023 - 8 September 2023.
- A Simulation Study To Understand Energy Usage Requirements Of Electric Bus Fleets. Proceedings of the 28th Annual Logistics Research Network Conference, 6 September 2023 - 8 September 2023.
- Predicting Energy Use of an Electric Vehicle using Vehicle Dashcam Telemetry Data. World Conference on Transport Research - WCTR 2023 Montreal, Canada, 17 July 2023 - 21 July 2023.
- Electric vehicle charging impacts on rural power grids. EVI: Charging Ahead (EVI 2023)
- Design and Analysis of a Voltage Controlled Current Source Gate Driver for an IGBT. PCIM Europe Conference Proceedings (pp 1114-1123)
- Investigation of using BSPT for ring-dot piezoelectric transformers for use in high-temperature resonant power supplies. imaps-Conferences, Vol. 2022(HiTEN). Oxford, 18 July 2022 - 18 July 2022.
- Analysis of test methods for measurement of leakage and magnetising inductances in integrated transformers. Proceedings of 2022 24th European Conference on Power Electronics and Applications (EPE'22 ECCE Europe). Hanover, Germany, 5 September 2022 - 9 September 2022. View this article in WRRO
- Critical design criterion for inductorless H-bridge driven piezoelectric-transformer-based power supplies. IECON 2022 – 48th Annual Conference of the IEEE Industrial Electronics Society, 17 October 2022 - 20 October 2022. View this article in WRRO
- Pallet-Sized, Hot-Swappable Battery Packs for Electric HGV Range Extension. Logistics Research Network Conference 2022 Supply Chain Innovation: People, Process, Technology
- Impact on Annual Electricity Cost of Introducing Battery Energy Storage at a Warehouse. Logistics Research Network Conference 2022 Supply Chain Innovation: People, Process, Technology (pp 100-106)
- Investigation of using BSPT for ring-dot piezoelectric transformers for use in high-temperature resonant power supplies. imaps-Conferences. Oxford, 18 July 2022 - 20 July 2022. View this article in WRRO
- Performance Of Pzt-based Piezoelectric Transformers For Use In High-temperature Converters. Power Electronics, Machines and Drives (PEMD) 2022
- RadPTDesigner: A program for designing radial mode piezoelectric transformers for inductorless inverters. 2021 23rd European Conference on Power Electronics and Applications, EPE 2021 ECCE Europe
- Design and Analysis of a Fully-integrated Planar Transformer for LCLC Resonant Converters. 2021 23rd European Conference on Power Electronics and Applications, EPE 2021 ECCE Europe
- A Position Error Correction Method for Sensorless Control of Dual Three-Phase Permanent Magnet Synchronous Machines. 2021 IEEE International Electric Machines & Drives Conference (IEMDC), 17 May 2021 - 20 May 2021.
- Novel Liquid Cooling Technology for Modular Consequent-Pole PM Machines. 2021 IEEE International Electric Machines & Drives Conference (IEMDC), 17 May 2021 - 20 May 2021.
- Dashcam Video-Driven, Route Distinctive Energy Consumption Pre-Evaluation for Electrifying Public Services Fleets. 2021 Sixteenth International Conference on Ecological Vehicles and Renewable Energies (EVER), 5 May 2021 - 7 May 2021.
- Matlab-based High-Performance Electric Motorbike Energy Model, Utilising Video Data. 2021 Sixteenth International Conference on Ecological Vehicles and Renewable Energies (EVER), 5 May 2021 - 7 May 2021.
- SENSORLESS CONTROL FOR PERMANENT MAGNET SYNCHRONOUS MACHINE DRIVES CONSIDERING RESISTANCE ASYMMETRY. The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020)
- Impact of magnetic coupling in transverse flux permanent magnet machine for wind power application. IET Power Electronics Machines and Drives Conference, 15 December 2020 - 15 December 2020.
- Multivariable generalized predictive speed control for permanent magnet synchronous machine with enhanced luenberger speed observer. IET Power Electronics Machines and Drives Conference, 15 December 2020 - 17 December 2020.
- Comparative Study of Parameter Mismatch on Different Model Predictive Controls for PMSM Drives. 2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia), 29 November 2020 - 2 December 2020.
- Improved Cooling in Modular Consequent Pole PM Machine Utilizing Flux Gaps. IEEE-ECCE
- Improved Sensorless Control Method for Permanent Magnet Synchronous Machines Considering Resistance Asymmetry and Temperature Variation. 2020 IEEE Energy Conversion Congress and Exposition (ECCE), 11 October 2020 - 15 October 2020.
- Experimental Analysis of Efficiencies of a Large Scale Energy Storage System. 2020 2nd IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES), 1 September 2020 - 3 September 2020.
- A Low Cost, Rapid Impedance Measurement Technique Suitable for Li-ion Health Diagnosis in Battery Energy Storage Systems. International Conference on Smart Grids and Energy, 27 April 2019 - 30 May 2019.
- Development and Validation of a Battery Model for Battery Electric Multiple Unit Trains. IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society, 14 October 2019 - 17 October 2019.
- Suppressing Leakage Current for Cascaded H-bridge Converters in Grid-Tie Renewable Energy Systems. 2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe), 3 September 2019 - 5 September 2019. View this article in WRRO
- Equivalent Circuit Parameter Extraction Methods for Piezoelectric Transformers. 2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe), 3 September 2019 - 5 September 2019. View this article in WRRO
- Modelling of Bidirectional CLLC Resonant Converter Operating under Frequency Modulation. 2019 IEEE Energy Conversion Congress and Exposition (ECCE), 29 September 2019 - 3 October 2019.
- Influence of Demagnetization on Selecting the Optimum Slot/Pole Number Combination for 3MW Surface Mounted Permanent Magnet Vernier Machine. 2019 22nd International Conference on Electrical Machines and Systems (ICEMS), 11 August 2019 - 14 August 2019.
- A comparison of the effects of charging strategies on lithium-ion cell performance in high temperature environments. 2019 IEEE International Conference on Industrial Technology (ICIT) (pp 1107-1112). Melbourne, Australia, 13 February 2019 - 15 February 2019. View this article in WRRO
- Fully integrated EV energy storage using transport infrastructure. 2019 International Conference on Clean Electrical Power (ICCEP), 2 July 2019 - 4 July 2019.
- Battery Energy Management Strategies for UK Firm Frequency Response Services and Energy Arbitrage. IET, Vol. 17(6) (pp 4152-4157), 17 April 2019 - 19 April 2019. View this article in WRRO
- State-variable and cyclic-averaging analysis of bidirectional CLLC resonant converters. IET PEMD 2018, Vol. 2019(17) (pp 4364-4368) View this article in WRRO
- Coordinated Dispatch Performance of AC Grid-Connected Energy Storage Systems. 2019 IEEE Milan PowerTech, 23 June 2019 - 27 June 2019.
- Comparative Studies of Fractional/Integer-Slot Consequent Pole Permanent Magnet Machines. 2019 IEEE International Electric Machines & Drives Conference (IEMDC), 12 May 2019 - 15 May 2019.
- Investigation of Integer/Fractional Slot Consequent Pole PM Machines with Different Rotor Structures. 2019 IEEE International Electric Machines & Drives Conference (IEMDC), 12 May 2019 - 15 May 2019.
- Study of Manufacturing Tolerance of Modular Permanent Magnet Machines: Segment Radial Displacement. 2019 IEEE International Electric Machines & Drives Conference (IEMDC), 12 May 2019 - 15 May 2019.
- Influence of Demagnetization on Selecting the Optimum Slot/Pole Number Combination for 3MW Surface Mounted Permanent Magnet Vernier Machine. 2019 22ND INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS 2019) (pp 5317-5322)
- An Investigation into the Thermal Benefits of Multilevel Converters. IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society, 21 October 2018 - 23 October 2018. View this article in WRRO
- A Non-Isolated Bipolar Gate Driver with Self-Driven Negative Bias Generator in High-Side-Only Application. IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society, 21 October 2018 - 23 October 2018. View this article in WRRO
- An Experimental Investigation of MOSFET Intrisic Body Diode Performance. 2018 IEEE 27th International Symposium on Industrial Electronics (ISIE) (pp 341-345), 13 June 2018 - 15 June 2018. View this article in WRRO
- An Experimental Analysis of the Effect of Cell Degradation on Dynamic Charge Acceptance in Lead-Acid Cells. 2018 IEEE 27th International Symposium on Industrial Electronics (ISIE) (pp 187-192), 13 June 2018 - 15 June 2018. View this article in WRRO
- A forecasting battery state of charge management strategy for frequency response in the UK system. 2018 IEEE International Conference on Industrial Technology (ICIT), 20 February 2018 - 22 February 2018.
- Battery SOC management strategy for enhanced frequency response and day-ahead energy scheduling of BESS for energy arbitrage. IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, 29 October 2017 - 1 November 2017. View this article in WRRO
- A battery energy management strategy for UK enhanced frequency response. 2017 IEEE 26th International Symposium on Industrial Electronics (ISIE), 19 June 2017 - 21 June 2017. View this article in WRRO
- A hybrid wireless PLL for phase shift control based maximum efficiency point tracking in resonant wireless power transmission systems. IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, 29 October 2017 - 1 November 2017. View this article in WRRO
- Parameterisation and online states estimation of high-energy lithium-titanate cells. IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, 29 October 2017 - 1 November 2017. View this article in WRRO
- Experimental analysis of the influence of high-frequency ripple currents on dynamic charge acceptance in lead-acid batteries. IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, 29 October 2017 - 1 November 2017. View this article in WRRO
- Arc-flash calculation comparison for energy storage systems. 2017 52nd International Universities Power Engineering Conference (UPEC), 28 August 2017 - 31 August 2017.
- Switching loss optimisation of cascaded H-bridge converters for bidirectional grid-tie battery energy storage systems. IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, 29 October 2017 - 1 November 2017. View this article in WRRO
- Phase shift control based Maximum Efficiency Point Tracking in resonant wireless power system and its realization. IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society (pp 4541-4546), 24 October 2016 - 27 October 2016. View this article in WRRO
- On-chip implementation of Extended Kalman Filter for adaptive battery states monitoring. IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society, 23 October 2016 - 26 October 2016. View this article in WRRO
- Experimental analysis of dynamic charge acceptance test conditions for lead-acid cells. IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society, 23 October 2016 - 26 October 2016. View this article in WRRO
- A hybrid battery parameter identification concept for lithium-ion energy storage applications. IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society, 23 October 2016 - 26 October 2016. View this article in WRRO
- Thermal Analysis Using 2-Dimensional Impedance Spectroscopy and Pseudorandom Binary Sequences. IWIS 2016
- Observations on Changes to Electrolytic Capacitor Electrical Properties Caused by Gamma Irradiation. IWIS 2016, 26 September 2016 - 28 September 2016. View this article in WRRO
- Measurement of Electrical Parameters of Electrolytic Capacitors Using Real-World Drive Waveforms for State-of-Health Determination. IWIS 2016, 26 September 2016 - 28 September 2016. View this article in WRRO
- Multi-stage LLC resonant converters designed for wide output voltage ranges. PCIM Europe 2016; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (pp 1769-1776) View this article in WRRO
- Examining contrasting excitation modes within battery characterisation using maximum length sequences. PCIM Europe 2016; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (pp 2090-2097) View this article in WRRO
- Electrolytic capacitor age estimation using PRBS-based Techniques. PCIM Europe 2016; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (pp 1095-1102) View this article in WRRO
- Battery energy storage systems for the electricity grid: UK research facilities. 8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016) View this article in WRRO
- Repurposing ATX Power Supply for Battery Charging Applications. 8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016) View this article in WRRO
- Performance evaluation of SiC MOSFET in 5-level single phase converter. 8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016) View this article in WRRO
- Battery charger with a capacitor-diode clamped LLC resonant converter. 8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016) View this article in WRRO
- Minimum charge-recovery time control with parallel connected buck converters. 8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016) View this article in WRRO
- Phase Shift Control Based Maximum Efficiency Point Tracking in Resonant Wireless Power System and its Realization. PROCEEDINGS OF THE IECON 2016 - 42ND ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY (pp 4535-4540)
- Maximum efficiency point tracking for resonant wireless power transfer. 8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016)
- Observation of electrolytic capacitor ageing behaviour for the purpose of prognostics. IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society, 23 October 2016 - 26 October 2016. View this article in WRRO
- A Model-based Predictive Current Controller for a back-to-back connected multilevel converter aerospace starter-generator. IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society, 23 October 2016 - 26 October 2016. View this article in WRRO
- Enhanced state-of-charge estimation for lithium-ion iron phosphate cells with flat open-circuit voltage curves. IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society, 9 November 2015 - 12 November 2015.
- Wireless power system appling a microcontroller dominated matrix converter. IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society, 9 November 2015 - 12 November 2015.
- Practical design considerations of cascaded hybrid battery storage systems. 2015 17th European Conference on Power Electronics and Applications (EPE'15 ECCE-Europe), 8 September 2015 - 10 September 2015.
- Current ripple reduction in 4kW LLC resonant converter based battery charger for electric vehicles. 2015 IEEE Energy Conversion Congress and Exposition (ECCE), 20 September 2015 - 24 September 2015.
- Modelling the enhancement to the thermal performance of encapsulants using thermally conductive filler materials. PCIM Asia Conference Proceedings
- Enhanced state-of-charge estimation for lithium-ion iron phosphate cells with flat open-circuit voltage curves.. IECON (pp 3187-3192)
- Comparison of electrically excited and interior permanent magnet machines for hybrid electric vehicle application. 2014 17th International Conference on Electrical Machines and Systems (ICEMS), 22 October 2014 - 25 October 2014.
- A ΓZ-source based hybrid power converter for battery-fuel cell hybrid electric vehicle. 2014 UKACC International Conference on Control (CONTROL), 9 July 2014 - 11 July 2014.
- A Microcontroller-Based State-of-Health Estimator for Lithium-ion Batteries. International conference on Power Electronics, Machines and Drives. Manchester, UK, 8 April 2014 - 10 May 2014.
- A low cost photovoltaic maximum power point tracking buck converter for cell phone charging applications. PCIM Europe Conference Proceedings (pp 643-650)
- ATX power supply derived MPPT converter for cell phone charging applications in the developing world. 7th IET International Conference on Power Electronics, Machines and Drives, PEMD 2014
- Variable PWM step-size for modified Hill climbing MPPT PV converter. 7th IET International Conference on Power Electronics, Machines and Drives, PEMD 2014
- An experimental evaluation of thermally conductive filler loaded encapsulant composites. 7th IET International Conference on Power Electronics, Machines and Drives, PEMD 2014
- Computationally Efficient Method and Investigation of Operational Envelopes of Hybrid and Electrically Excited Machines. Ninth International Conference on Ecological Vehicles and Renewable Energies (EVER). Monte-Carlo, 25 March 2014.
- A compact power converter for hybrid energy systems. IECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society, 29 October 2014 - 1 November 2014.
- A Compact Power Converter for Hybrid Energy Systems. IECON 2014 - 40TH ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY (pp 995-1000)
- Sensitivity of Lumped Parameter Battery Models to Constituent Parallel-RC Element Parameterisation Error. IECON 2014 - 40TH ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY (pp 5660-5665)
- Dynamic charge acceptance measurement and modelling in ultrabatteries. International Conference on Lead-Acid Batteries, LABAT (pp 231-234)
- Sensitivity of lumped parameter battery models to constituent parallel-RC element parameterisation error. IECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society, 29 October 2014 - 1 November 2014.
- A Gamma Z-source Based Hybrid Power Converter for Battery-Fuel Cell Hybrid Electric Vehicle. 2014 UKACC INTERNATIONAL CONFERENCE ON CONTROL (CONTROL) (pp 419-424)
- Computationally efficient method and investigation of operational envelopes of hybrid and electrically excited machines. 2014 Ninth International Conference on Ecological Vehicles and Renewable Energies (EVER), 25 March 2014 - 27 March 2014.
- Variable PWM step-size for modified hill climbing MPPT PV converter. IET Conference Publications, Vol. 2014(628 CP)
- Real-time temperature monitoring and control for power electronic systems under variable active cooling by characterisation of device thermal transfer impedance. IET Conference Publications, Vol. 2014(628 CP)
- ATX power supply derived MPPT converter for cell phone charging applications in the developing world. IET Conference Publications, Vol. 2014(628 CP)
- An experimental evaluation of thermally conductive filler loaded encapsulant composites. IET Conference Publications, Vol. 2014(628 CP)
- Mechanically actuated variable flux IPMSM for EV and HEV applications. 2013 World Electric Vehicle Symposium and Exhibition (EVS27), 17 November 2013 - 20 November 2013.
- Viability of 'second-life' use of electric and hybrid-electric vehicle battery packs. 39th Annual Conference of the IEEE Industrial Electronics Society. Vienna, Austria, November 2013.
- Prediction of device temperatures in an electric vehicle battery charger system by analysis of device thermal cross-coupling. 15th European Conference on Power Electronics and Applications (EPE). Lille, France, 3 September 2013 - 5 September 2013.
- A robust state-of-function battery modelling technique for Li-ion battery chemistries developed for EV/HEV vehicles. PCIM Asia 2013, Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. Shanghai, China, 17 June 2013 - 19 June 2013.
- A comparative study of on-board bidirectional chargers for electric vehicles to support vehicle-to-grid power transfer. Proceedings of the International Conference on Power Electronics and Drive Systems (pp 639-644)
- Second life of computer power supplies for PV battery charging. 15th European Conference on Power Electronics and Applications. Lille, France, 3 September 2013 - 5 September 2013.
- Repurposing of ATX computer power supplies for PV applications in developing countries. Proceedings of 2013 International Conference on Renewable Energy Research and Applications, ICRERA 2013 (pp 973-978)
- Bipolar mode pseudo random binary sequence excitation for parameter estimation in lead-acid batteries. International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
- Design of thermally integrated planar inductor utilising aluminium oxide as a winding insulation material. Power Control and Intelligent Motion (PCIM) 2013. Nuremberg, 13 May 2013 - 16 May 2013.
- Application of maximum length sequences to battery charge programming for parameter estimation in lead-acid batteries. Power Control and Intelligent Motion (PCIM) 2013. Nuremberg, 13 May 2013 - 16 May 2013.
- New design approach for higher energy efficiency with parallel converter. IET Power Electronics, Machines and Drives Conference. Bristol, UK
- Arbitrary waveform power controller for thermal measurements of semiconductor devices. iPower 2. University of Warwick, 28 November 2012 - 29 November 2012.
- The design of a solar cell emulator for the evaluation of low power maximum power point tracking converters. All Energy Conference. Aberdeen, UK
- An investigation into the feasibility of using aluminium oxide to insulate aluminium planar windings. iPower 2. University of Warwick, 28 November 2012 - 29 November 2012.
- A capacitive level shifter for high voltage (2.5kV). Proceedings of the IEEE International Power Modulator and High Voltage Conference, IPMHVC 2012 (pp 450-453)
- Nonlinear effects in piezoelectric transformers explained by thermal-electric model based on a hypothesis of self-heating. IECON Proceedings (Industrial Electronics Conference) (pp 596-601)
- Star connection of grid connected single phase VSIs to supply unbalanced or nonlinear loads under normal and fault condition considering the transmission line impedances. IET Conference Publications
- Tidal stream power collection - passive rectification to a common DC-bus. IET Conference Publications
- A review of electrical energy storage (EES) technologies for stationary grid applications. All-Energy 2012 Exhibition and Conference. Aberdeen, UK
- Maximum power point tracking converters and their issues. All-Energy 2012 Exhibition and Conference. Aberdeen, UK
- State indicators for lead-acid batteries utilising pseudo random binary sequences. All-Energy 2012 Exhibition and Conference. Aberdeen, UK
- Impact of ripple current on the average output power of solar cells. All-Energy 2012 Exhibition and Conference. Aberdeen, UK
- Modelling of VRLA batteries over operational temperature range using pseudo random binary sequences. Lead-Acid Battery Conference. Bulgaria
- Impact of ripple current on the average output power of solar cells. IET Power Electronics, Machines and Drives Conference. Bristol, UK
- Reduction of passive filtering in aerospace starter/generator systems using a multilevel converter with predictive current control. IET Power Electronics, Machines and Drives Conference. Bristol, UK, 27 March 2012 - 29 March 2012.
- EV/HEV Li-ion battery modelling and state-of-function determination. 21st International Symposium on Power Electronics, Electrical Drives, Automation and Motion (pp 353-358)
- New design approach for higher energy efficiency with parallel converter. IET Power Electronics, Machines and Drives Conference. Bristol, UK
- The use of virtual flux estimation in aerospace starter-generator systems. 21st International Symposium on Power Electronics, Electrical Drives, Automation and Motion (pp 426-431)
- A dynamic model of the LLC resonant converter for control response prediction. Conference on Power Conversion Intelligent Motion
- Review of variable-flux permanent magnet machines. International Conference on Electrical Machines and Systems. Beijing, China, 20 August 2011 - 23 August 2011.
- Grid connected PVs and wind turbine with a wide range of reactive power control and active filter capability. 2nd European Conference on Innovative and Smart Grid Technologies. Manchester, UK, 5 December 2011 - 7 December 2011.
- Fuel cell power controller with current ripple reduction. Conference on Power Conversion Intelligent Motion
- Mechanically adjusted variable-flux concept for switched-flux permanent-magnet machines. International Conference on Electrical Machines and Systems. Beijing, China, 20 August 2011 - 23 August 2011.
- A dynamic model of the LLC resonant converter for control response prediction. PCIM Europe. Nuremberg, Germany
- State-of-charge indicators for VRLA batteries utilising pseudo random binary sequences (PRBS). PCIM Europe. Nuremberg, Germany
- Phase-locked loop (PLL) pulse-width modulator (PWM) based controller for LLC resonant converters. PCIM Europe. Nuremberg Germany
- Back-to-back connected multilevel inverters for aerospace starter-generator applications. PCIM Europe. Nuremberg, Germany
- Review of variable-flux permanent magnet machines. International Conference on Electrical Machines and Systems, ICEMS 2011
- Mechanically adjusted variable-flux concept for switched-flux permanent-magnet machines. International Conference on Electrical Machines and Systems, ICEMS 2011
- Stand alone power supply system under high FCs efficiency and new technique for batteries charging/discharging. Proceedings of the 14th European Conference on Power Electronics and Applications, EPE 2011
- Utilizing existing aircraft wound field generators for starter-generators. 8th International Conference on Power Electronics - ECCE Asia: "Green World with Power Electronics", ICPE 2011-ECCE Asia (pp 691-696)
- State-of-function determination for EV/HEV battery packs. 25th World Battery, Hybrid and Fuel Cell Electric Vehicles Symposium (EVS 25). Shenzhen, China, 5 November 2010 - 9 November 2010.
- Multilevel cascaded H-bridge inverter with integrated battery management for alternative energy applications. 3rd Seminar EPE Wind Energy Chapter. Warwick, UK, 15 April 2010 - 16 April 2010.
- State-of-function determination for EV/HEV battery packs. 25th World Battery, Hybrid and Fuel Cell Electric Vehicle Symposium & Exhibition. Shenzhen, China, 5 November 2010.
- MLS Testing of VRLA batteries using pseudo random binary sequences (PRBS). CD ROM. Shenzhen, China, 5 November 2010 - 9 November 2010.
- Evaluation of thermally efficient mounting techniques for ferrite cores. 9th International Power and Energy Conference, IPEC 2010 (pp 323-327)
- VRLA battery parameter identification using pseudo random binary sequences (PRBS). IET Conference Publications
- Effect of inter-layer interface quality on electrical and thermal characteristics of IMS. IET Conference Publications
- Device temperature projection technique for IMS based systems. IET Conference Publications
- Comparative study of current vector control performance of alternate fault tolerant inverter topologies for three-phase PM brushless AC machine with one phase open-circuit fault. IET Conference Publications
- MLS testing of vrla batteries using Pseudo Random Binary Sequences (PRBS). EVS 2010 - Sustainable Mobility Revolution: 25th World Battery, Hybrid and Fuel Cell Electric Vehicle Symposium and Exhibition
- Comparison between multilevel and classical 2-level inverters regarding stall torque improvements for driving brushless PM machines. PCIM Europe, CDROM. Nuremburg
- Low computational complexity observer based modeling techniques for device temperature prediction in IMS based systems. 8th International Conference on Power Electronics and Drive Systems. Taipei, Taiwan
- An automated design methodology for LLC resonant converters using a genetic algorithm. PCIM Europe 2009. Nuremberg, Germany
- Comparison between multilevel and classical 2-level inverters regarding stall torque improvements for driving brushless PM machines. PCIM Europe 2009. Nuremberg, Germany
- System-wide temperature estimation for IMS based power electronics circuits. Proceedings of the International Conference on Power Electronics and Drive Systems (pp 615-618)
- Achieving ZVS in inductor-less half-bridge piezoelectric transformer based resonant converters. Proceedings of the International Conference on Power Electronics and Drive Systems (pp 446-451)
- A three-phase to single-phase matrix converter for high-frequency induction heating. 13th European Conference on Power Electronics and Applications, EPE '09
- A lumped equivalent circuit model for the radial mode piezoelectric transformer. Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC (pp 1747-1753)
- Phase locked loop (PLL) based self-oscillating controller for LCC resonant converters. IET Conference Publications(538 CP) (pp 446-450)
- A genetic algorithm for designing LCLC resonant converters. IET Conference Publications(538 CP) (pp 732-736)
- A new switching scheme for reduced switching frequency and balanced capacitor voltages for back-to-back connected, diode- clamped multilevel converters. IET Conference Publications(538 CP) (pp 636-639)
- Digitally controlled converter with an adaptive step size for maximum power point tracking for photovoltaic applications. IECON Proceedings (Industrial Electronics Conference) (pp 703-706)
- Integrated multilevel converter and battery management. SPEEDAM 2008 - International Symposium on Power Electronics, Electrical Drives, Automation and Motion (pp 756-759)
- Characteristics of high-voltage capacitors when operating in high temperature environments. Proceedings - 2008 2nd Electronics Systemintegration Technology Conference, ESTC (pp 423-426)
- A frequency-response-based characterisation methodology for piezoelectric transformers. Proceedings - 2008 2nd Electronics Systemintegration Technology Conference, ESTC (pp 959-962)
- Novel battery model of an all-electric personal rapid transit vehicle to determine state-of-health through subspace parameter estimation and a Kalman estimator. SPEEDAM 2008 - International Symposium on Power Electronics, Electrical Drives, Automation and Motion (pp 1217-1222)
- Battery health determination by subspace parameter estimation and sliding mode control for an all-electric personal rapid transit vehicle - the ULTra. PESC Record - IEEE Annual Power Electronics Specialists Conference (pp 4381-4385)
- Hardware-in-the-loop tuning of a feedback controller for a buck converter using a GA. SPEEDAM 2008 - International Symposium on Power Electronics, Electrical Drives, Automation and Motion (pp 680-684)
- Influence of Machine Topology and Cross-Coupling Magnetic Saturation on Rotor Position Estimation Accuracy in Extended Back-EMF Based Sensorless PM Brushless AC Drives. 2007 IEEE Industry Applications Annual Meeting, 23 September 2007 - 27 September 2007.
- Improved Rotor Position Estimation by Signal Injection in Brushless AC Motors, Accounting for Cross-Coupling Magnetic Saturation. 2007 IEEE Industry Applications Annual Meeting, 23 September 2007 - 27 September 2007.
- Rapid analysis & design methodologies of high- frequency LCLC resonant inverter as electrodeless fluorescent lamp ballast. Proceedings of the International Conference on Power Electronics and Drive Systems (pp 139-144)
- Rapid analysis & design methodologies of high-frequency LCLC resonant inverter as electrodeless fluorescent lamp ballast. International Conference on Power Electronics and Drive Systems, Vol. 1-4 (pp 376-381)
- Analysis and control of dual-output LCLC resonant converters, and the impact of leakage inductance. Proceedings of the International Conference on Power Electronics and Drive Systems, Vol. 1-4 (pp 145-150)
- Improved rotor position estimation by signal injection in brushless AC motors, accounting for cross-coupling magnetic saturation. Conference Record - IAS Annual Meeting (IEEE Industry Applications Society), Vol. 1-5 (pp 2357-2364)
- Influence of machine topology and cross-coupling magnetic saturation on rotor position estimation accuracy in extended back-EMF based sensorless PM brushless AC drives. Conference Record - IAS Annual Meeting (IEEE Industry Applications Society), Vol. 1-5 (pp 2378-2385)
- Analysis of self-oscillating DC-DC resonant power converters using a hysteretic relay. European Conference on Power Electronics and Applications, EPE, Vol. 1-10 (pp 4108-4116)
- A back to back multilevel converter for driving low inductance brushless AC machines. European Conference on Power Electronics and Applications, EPE, Vol. 1-10 (pp 1764-1772)
- A hybrid, physical-behavioral fluorescent lamp model suitable for use in Spice and Simulink. European Conference on Power Electronics and Applications, EPE, Vol. 1-10 (pp 3939-3947)
- A cascaded H-bridge BLDC drive incorporating battery management. European Conference on Power Electronics and Applications, EPE, Vol. 1-10 (pp 899-907)
- State-of-the-art piezoelectric transformer technology. European Conference on Power Electronics and Applications, EPE, Vol. 1-10 (pp 1637-1646)
- Comparison of single-phase matrix converter and H-bridge converter for radio frequency induction heating. European Conference on Power Electronics and Applications, EPE, Vol. 1-10 (pp 94-102)
- Power-factor control of the LCC current-output resonant converter. European Conference on Power Electronics and Applications, EPE, Vol. 1-10 (pp 575-584)
- Design of an LCC current-output resonant converter for use as a constant current source. European Conference on Power Electronics and Applications, EPE, Vol. 1-10 (pp 585-590)
- High power, unity power factor supply for plastic pipe welding applications. IECON Proceedings (Industrial Electronics Conference) (pp 1892-1895)
- Modelling and regulation of dual-output LCLC resonant converters. IECON Proceedings (Industrial Electronics Conference), Vol. 1-3 (pp 2130-2135)
- Bandwidth-controlled steady-state design and analysis of a 3kW CLL resonant converter with rectified main output characteristics. International Conference on Electrical Machines and Systems, ICEMS. Nagasaki, Japan
- A novel AC equivalent circuit for the CLL voltage-output resonant converter using describing functions. ICEMS - Int. Conf. Electrical Machines and Systems. Japan
- State of charge estimation of valve-regulated sealed lead-acid batteries in hybrid electric vehicles. CDROM. Athens, 26 September 2006 - 29 September 2006.
- Single phase matrix converter for radio frequency induction heating. International Symposium on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM (pp 614-618)
- Digital control of dual-load LCLC resonant converters. European Conference on Power Electronics and Applications
- Rapid design of LCC current-output resonant converters with reduced electrical stresses. European Conference on Power Electronics and Applications
- State-of-charge and state-of-health prediction of lead-acid batteries for hybrid electric vehicles using non-linear observers. European Conference on Power Electronics and Applications
- The parallel combination of a valve regulated lead acid cell and supercapacitor for use as a hybrid vehicle peak power buffer. European Conference on Power Electronics and Applications
- Sensorless control of deep-sea ROVs PMSMs excited by matrix converters. European Conference on Power Electronics and Applications
- EKF-based output-voltage regulation of 3-order LCC resonant converters subject to load variations. European Conference on Power Electronics and Applications
- Influence of ROV umbilical on power quality when supplying electrical loads. European Conference on Power Electronics and Applications
- Observer techniques for estimating the state-of-charge and state-of-health of VRLABs for hybrid electric vehicles. IEEE Vehicle Power and Propulsion Conference, VPPC (pp 780-789)
- Rapid steady-state analysis of CLL resonant power converters. Proceedings of the IASTED International Conference on Circuits, Signals, and Systems (pp 520-525)
- On-line design of robust fuzzy-logic control systems by multi-objective evolutionary methods. American Control Conference. Boston, Massachusetts, USA, 30 June 2004 - 2 July 2004.
- EFK-based feedback control of 3rd order LCC resonant converters with significant load variations. International Power Electronics and Motion Control Conference. Riga, Latvia, 2 September 2004 - 4 September 2004.
- Matrix converters for sensorless control of PMSMs and other auxiliaries on deep-sea ROVS. IEE Conference Publication, Vol. 2 (pp 703-708)
- Analysis & design of high-frequency LCLC resonant converters for electrode-less fluorescent lamp ballasts. IEE Conference Publication, Vol. 1 (pp 137-142)
- State-variable modelling of CLL resonant converters. IEE Conference Publication, Vol. 1 (pp 214-219)
- Lifetime extension of valve regulated lead acid (VRLA) batteries under hybrid vehicle duty. IEE Conference Publication, Vol. 1 (pp 49-54)
- On-line multiobjective automatic control system generation by evolutionary algorithms. IEEE International Symposium on Industrial Electronics, Vol. 2 (pp 1459-1464)
- Modeling the electrical behavior of fluorescent lamps on the basis of a self-consistent collisional-radiative model. Conference Record - IAS Annual Meeting (IEEE Industry Applications Society), Vol. 3 (pp 1646-1654)
- Medium pressure mercury discharge for use as an intense white light source. Proceedings of the 10th International Symposium on the Science and Technology of Light Sources(182) (pp 565-566). Toulouse, 18 July 2004 - 22 July 2004.
- Enhancement of near-UV and visible emissions using pulsed low-pressure Hg-Ar discharge. Proceedings of the 10th International Symposium on he Science and Technology of Light Sources(182) (pp 571-572). Toulouse, 18 July 2004 - 22 July 2004.
- Optimising the efficiency of low-pressure discharges for lighting. Proceedings of the 10th International Symposium on the Science and Technology of Light Sources(182) (pp 563-564). Toulouse, 18 July 2004 - 22 July 2004.
- Stress analysis of 4th-order LLCC resonant converters. 10th European Conference on Power Electronics and Applications. Toulouse, France, 2 September 2003 - 4 September 2003.
- Observer based feedback control of 3rd order LCC resonant converters. 10th European Conference on Power Electronics and Applications. Toulouse, France, 2 September 2003 - 4 September 2003.
- Impedance measurement and characterisation of valve regulated lead acid battery (VRLA) cells for state of charge monitoring. 10th European Conference on Power Electronics and Applications. Toulouse, France, 2 September 2003 - 4 September 2003.
- A dynamic spice model of fluorescent lamp for electronic ballast design simulation. Hong Kong IEEE Conference on Plasma Science. Hong Kong
- The development and testing of a lead-acid battery system for a hybrid electric vehicle (Rholab – a foresight vehicle link project). Future Transportation Technology Conference. Costa Mesa, California, June 2003.
- Drive systems for operation on deep sea ROV’s. 10th European Conference on Power Electronics and Applications. Toulouse, France, 2 September 2003 - 4 September 2003.
- A dynamic conductance model of fluorescent lamp for electronic ballast design simulation. IEEE International Conference on Plasma Science (pp 303-303)
- On-line design of robust fuzzy-logic control systems by multi-objective evolutionary methods. ESM 2003: 17th European Simulation Multicoference (pp 83-90)
- The dynamical behaviour of pulsed low-pressure discharges. International Symposium on GD OES Surface Analysis. Yokahama, Japan, November 2002.
- A reliable, highly optimised, lead-acid battery (RHOLAB) for affordable HEV’s – a foresight vehicle link project. Future Car Congress. Washington, USA, June 2002.
- Lead-acid batteries for hybrid electric vehicles – The RHOLAB project. Advanced Automotive Battery Conference (pp 1-9). Las Vegas, USA, February 2002.
- Modelling and diagnostics of the dynamical behaviour of low pressure discharges. EPRSC Technological Plasma Initiative Conference. Warwick, 17 December 2001 - 18 December 2001.
- Modelling of low-pressure discharge lamp (fluorescent lamp) for circuit simulation. EPRSC Technological Plasma Initiative Conference. Warwick, 17 December 2001 - 18 December 2001.
- Test bench for lifetime testing of hybrid electric vehicle battery packs. PCIM Europe 2001 (pp 33-38). Nuremburg
- Commercial electronic devices for operation in high-pressure, deep-sea drive systems. PCIM Europe 2001 (pp 275-279). Nuremburg, November 2001.
- Digital control improves three-phase induction heater performance. PCIM Europe 2001 (pp 63-68). Nuremburg, November 2001.
- Dynamic load impedance matching for induction heater systems. Heating by Internal Sources. Padua University, Italy, 12 September 2001 - 14 September 2001.
- IGBT-module driver optimised for electric vehicle application. 9th European Conference on Power Electronics and Applications. Gratz, Austria
- Review of modelling methodologies to facilitate rapid simulation of high order resonant converters. CD ROM. Gratz, Austria
- Design of robust current tracking control for active power filters. IEMDC 2001, IEEE International Electric Machines and Drives Conference (pp 948-953)
- FDTD modelling of heatsinks for EMC. Annual EMC Conference in Collaboration with the IEE (pp 125-130). York, UK
- Influence of gear change on the efficiency of a gasoline ICE and integrated permanent magnet motor/generator parallel hybrid power-train. 32nd International Symposium on Automotive Technology and Automation, ISATA’99, 1999.
- Simulink based macro model to allow optimisation and prediction of parameters for voltage source induction heater inverters. PCIM Europe (pp 457-462). Nuremburg, 1999.
- Modular power converter topology allows induction heater to draw three phase input current with high power factor and low utility current distortion’. 8th European Conference on Power Electronics and Applications. Lausanne, Switzerland
- Dynamic load impedance correction for induction heaters. Proceedings of the International Conference on Power Electronics and Drive Systems, Vol. 1 (pp 110-115)
- Rotor loss in permanent magnet brushless AC machines. IEEE International Electric Machines and Drives Conference (pp 60-62)
- Modelling and control of an electrically actuated vibratory system. International Conference on Electrical Machines (pp 369-374), 1998.
- The dynamical behaviour of pulsed low pressure discharges. Proceedings of the 8th International Symposium on the Science and Technology of Light Sources (pp 166-167), 1998.
- Acoustic noise radiated by space vector PWM, random PWM and direct torque controlled induction motor drive. International Conference on Electrical Machines (pp 1746-1751), 1998.
- Switched mode power converters in electric vehicles. Commercializing Fuel Cell Vehicles 97. USA, 1997.
- Application of the FD-TD method to modelling the electromagnetic radiation from heatsinks. International Conference on Electromagnetic Compatibility(445) (pp 119-124)
- DSP based nonlinear control of an electrically actuated vibratory pile-driver. Symposium on Power Electronics, Electrical Drives, Automation and Motion (pp A6/43-A6/49), 1996.
- Comparisons of loss and switching performance characteristics of IGBT's, MOSFET's and BJT's in resonant power converters. Symposium on Power Electronics, Electrical Drives, Automation and Motion (pp A1/1-A1/6), 1996.
- Electromagnetic compatibility of permanent magnet brushed dc machines. International Symposium on Electromagnetic Compatibility (pp 132-137), 1996.
- Calorimetric measurements of losses in IGBT's, MOSFET's and BJT's in hard switched and resonant power converters. PCIM Europe (pp 753-762). Nuremburg, 1996.
- Experimantal non-linear control of an electromagnetic vibratory pile-driver with DSP based implementation. European Power Electronics Conference (pp 97-102)
- Non-linear control of an electromagnetic vibratory pile-driver with DSP based implementation. International Conference on Electrical Machines (pp 126-131), 1996.
- Radiated EMI reduction from microcontroller systems using spread-spectrum modulation of the system clock. International Symposium on Electromagnetic Compatibility (pp 132-137), 1996.
- Design and implementation of a DSP based sensorless phase advance actuator for a brushless permanent magnet DC motor. Texas Instruments 1st European DSP Education and Research Conference. Paris, France, 1996.
- Easing EMC problems in switched mode power converters by random modulation of the PWM carrier frequency. Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC, Vol. 1 (pp 327-332)
- Random carrier frequency modulation of PWM waveforms to ease EMC problems in switched mode power supplies. International Conference on Power Electronics and Drive Systems (pp 16-21). San Jose, California, 1995.
- Electromagnetic compatability of a powered wheelchair. European Concerted Action for Rehabilitation Technology, 1995.
- Electromagnetic compatability of DC machines and drive systems. 2nd Chinese International Conference on Electrical Machines (pp 134-138), 1995.
- Electromagnetic compatibility of motors and drives. 1st Malaysian IEEE International Conference on Electromagnetic Compatibility (pp 145-150). Malaysia, 1995.
- Electromagnetic compatibility of electrical machines and drive systems. Proceedings of the Universities Power Engineering Conference, Vol. 1 (pp 141-144)
- Parameters and dynamic performance of an electromagnetic rolling rotor actuator. International Conference on Electrical Machines, Vol. 2 (pp 1-6), 1994.
- A versatile computer controlled dynamometer test system. Symposium on Power Electronics, Electrical Drives, Automation and Motion (pp 353-358), 1994.
- Real time control of field weakening for a brushless permanent magnet DC motor. EPE Symposium on Electric Drive Design and Applications (pp 391-396), 1994.
- Tandem rolling-rotor actuation systems. EPE Symposium on Electric Drive Design and Applications (pp 145-149), 1994.
- A resonant link brushless dc drive. International Conference on Electrical Machines (pp 254-258). Manchester, UK, 1992.
- Inexpensive PC-based integrated control systems for severely physically disabled people. 32nd Annual Scientific Meeting of the Biological Engineering Society, 1992.
- Modelling and sizing sensitivity analysis of a fully renewable energy-based electric vehicle charging station microgrid. EVI: Charging Ahead Conference
- A novel AC equivalent circuit for the CLL voltage-output resonant converter using describing functions. 9th International Conference on Electrical Machines and Systems. Nagasaki, Japan, November 2006.
- Parallel buck converter with non-identical power module for improved transient efficiency. Power Control and Intelligent Motion (PCIM) 2013. Nuremberg, 13 May 2013 - 16 May 2013.
- Mixed PRBS technique for thermal impedance spectroscopy of power electronic systems. Power Control and Intelligent Motion (PCIM) 2013. Nuremberg, 13 May 2013 - 16 May 2013.
- Understanding Fleet Energy Use of Electric Refuse Collection Vehicles in Urban Environments. 26th Annual Logistics Research Network Conference, 8 September 2021 - 10 September 2021.
- On-site PV generation to support local fleet vehicle charging. 26th Annual Logistics Research Network Conference, 8 September 2021 - 10 September 2021.
- Energy Usage and Sustainability Prediction for Electrified Public Service Vehicles (PSVs) – A City-Distinctive Pre-Deployment Solution. 26th Annual Logistics Research Network Conference, 8 September 2021 - 10 September 2021.
Reports
- Case study: Understanding the solar power potential at a Sheffield manufacturing and engineering firm View this article in WRRO
Posters
- Fully integrated EV energy storage using transport infrastructure. All Energy 2019.
Presentations
- Exploring the benefits of using locally generated solar energy, supported by a BESS, in reducing Well-to-Tank emissions associated with electric road freight fleets. Cambridge.
- The Feasibility of Replacing Conventional Urban Motorbikes with Electric Alternatives. Paris, France.
- Investigation of using BSPT for ring-dot piezoelectric transformers for use in high-temperature resonant power supplies. Oxford.
- Model-based Luenberger state observer for detecting interturn short-circuits in PM machines. IEEE Transactions on Transportation Electrification. View this article in WRRO
- Teaching activities
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- EEE223 - Electrical Energy Management and Conversion
- GEE202 - Electromechanical Energy Transformation
- EEE6202 - Energy Storage Management
- Professional activities and memberships
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- Head of Centre for Research into Electrical Energy Storage and Applications (CREESA)
- Director of CDT in Energy Storage and Applications (CDT - ESA)
- EEE Industrial Liaison
- Research students
Student Degree Status Primary/Secondary Liu J PhD Graduated Primary Sen B PhD Graduated Primary Bentley P PhD Graduated Primary Davidson J N PhD Graduated Primary Fewings K M MPhil Graduated Primary Gilbert A J PhD Graduated Primary Gould C R PhD Graduated Primary Holmes J PhD Graduated Primary Hussain Essam K A PhD Graduated Primary Mbabazi S PhD Graduated Primary Montague R G PhD Graduated Primary Nguyen-Quang N PhD Graduated Primary Price H R MPhil Graduated Primary Rios Penuelas A MPhil Graduated Primary West M J F PhD Graduated Primary Wilkie K D PhD Graduated Primary Constatin R S PhD Graduated Secondary Dolmansley T J C PhD Graduated Secondary Evans D J PhD Graduated Secondary Fairweather A J PhD Graduated Secondary Foster M P PhD Graduated Secondary Gomez Palomino J D PhD Graduated Secondary Hewitt D A PhD Graduated Secondary Liu C PhD Graduated Secondary Liu K PhD Graduated Secondary Nejad S PhD Graduated Secondary Saad Abuzed S PhD Graduated Secondary Schofield D M K PhD Graduated Secondary Snary P J PhD Graduated Secondary Tsang C W PhD Graduated Secondary Williams D R PhD Graduated Secondary Williams R H PhD Graduated Secondary