Professor Kais Atallah
PhD, Ingenieur D'Etat
School of Electrical and Electronic Engineering
Professor in Electrical Engineering
Member of CREESA
Electrical Machines and Drives Research Group
Lecturer in Aerospace Engineering
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+44 114 222 5812
Full contact details
School of Electrical and Electronic Engineering
Sir Frederick Mappin Building
Mappin Street
Sheffield
S1 3JD
- Profile
-
I joined the University of Sheffield as a PhD student in October 1989, and after a stint as a post-doctoral researcher at the department, I became a member of academic staff in January 2000.
My research interests have been concerned with the modelling and design of conventional and novel electromechanical energy conversion devices and magnetic torque/force transmission systems, for many applications, including electric and hybrid vehicles, aerospace actuation systems and renewable energy systems.
More specifically, my research into renewable energy generation, includes novel drivetrains for flywheel systems and wind turbines and the design and analysis of direct-drive and magnetically geared generators.
For electric/ hybrid vehicles, my research includes novel rare-earth free traction machines, and modelling and analysis of the interactions between the electrical and mechanical components in electric/ hybrid vehicles drivetrains.
For the aerospace sector, my research is concerned with fault tolerant machine and drive systems and the application of novel magnetic transmission devices in order to minimise the risk of jamming in flight control surface electromechanical actuation systems.
- Qualifications
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- Ingenieur D'Etat
- PhD
- Research interests
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- Magnetic transmission systems
- Magnetic gears and pseudo direct drive electrical machines
- Novel permanent magnet machines
- Interactions between electrical and mechanical components in electromechanical drive-trains
- Electrical generators and drive-trains for wind turbines
- Integrated drive-trains for electric and hybrid vehicles
- Novel actuation topologies for the more electric aircraft
- Flywheel energy storage systems
- Publications
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Journal articles
- Design, Analysis and Experimental Evaluation of a Novel High-Speed High-Power Ferrite IPM Machine for Traction Applications. IEEE Transactions on Industry Applications, 1-12.
- Comparison of Eddy Current Coupling Topologies for High Efficiency Mechanical Power Transmission. IEEE Transactions on Energy Conversion, 1-11.
- Pseudo Direct Drive Electrical Machine for a Floating Marine Turbine. IEEE Transactions on Magnetics, PP(99), 1-1.
- Magnetically Geared Propulsion Motor for Subsea Remote Operated Vehicle. IEEE Transactions on Magnetics, PP(99), 1-1.
- Analytical Modelling and Optimization of Output Voltage Harmonic Spectra of Full-Bridge Modular Multilevel Converters in Boost Mode. IEEE Transactions on Power Electronics, 1-1.
- Evaluation of simplified model for rapid identification and control development of IPM traction machines. IEEE Transactions on Transportation Electrification. View this article in WRRO
- Theoretical harmonic spectra of PWM waveforms including dc bus voltage ripple — Application to low-capacitance modular multilevel converter. IEEE Transactions on Power Electronics. View this article in WRRO
- High-performance ferrite permanent magnet brushless machines. IEEE Transactions on Magnetics, 55(7). View this article in WRRO
- Impulse magnetized magnetic screws. IEEE Transactions on Magnetics, 55(7). View this article in WRRO
- Dual rotor magnetically geared power split device for hybrid electric vehicles. IEEE Transactions on Industry Applications. View this article in WRRO
- Magnetically Geared Pseudo Direct Drive for Safety Critical Applications. IEEE Transactions on Industry Applications. View this article in WRRO
- “Pseudo” Direct Drive Electrical Machines With Alternative Winding Configurations. IEEE Transactions on Magnetics, 53(11), 1-8. View this article in WRRO
- Rotor Position Estimation of a Pseudo Direct Drive PM machine using Extended Kalman Filter. IEEE Trans. on Industry Applications, 53(2), 1088-1095. View this article in WRRO
- Coil Excited Pseudo Direct Drive Electrical Machines. IEEE Transactions on Magnetics, 53(1). View this article in WRRO
- Scaling of Pseudo Direct Drives for Wind Turbine Application. IEEE Transactions on Magnetics, 52(7), 1-5.
- Analytical Modeling and Optimization of Pseudo-Direct Drive Permanent Magnet Machines for Large Wind Turbines. IEEE Transactions on Magnetics, 51(12), 1-14.
- Effect of Laser Cut on the Performance of Permanent Magnet Assisted Synchronous Reluctance Machines. IEEE Transactions on Magnetics, 51(11), 1-4. View this article in WRRO
- Slip Recovery and Prevention in Pseudo Direct Drive Permanent-Magnet Machines. IEEE Transactions on Industry Applications, 51(3), 2291-2299. View this article in WRRO
- Influence of Control Structures and Load Parameters on Performance of a Pseudo Direct Drive. Machines, 2(3), 158-175. View this article in WRRO
- Effect of Rotor Eccentricity in Large Synchronous Machines. IEEE Transactions on Magnetics, 50(11), 1-4.
- Speed Control for a Pseudo Direct Drive Permanent-Magnet Machine With One Position Sensor on Low-Speed Rotor. IEEE Transactions on Industry Applications, 50(6), 3825-3833.
- Magnetic Gears for High Torque Applications. IEEE Transactions on Magnetics, 50(11), 1-4.
- Non centered minor hysteresis loops evaluation based on exponential parameters transforms of the modified inverse Jiles–Atherton model. Physica B: Condensed Matter, 451, 16-19.
- Magnetic Gear Pole-Slip Prevention Using Explicit Model Predictive Control. IEEE-ASME TRANSACTIONS ON MECHATRONICS, 18(5), 1535-1543.
- Trends in Wind Turbine Generator Systems. IEEE Journal of Emerging and Selected Topics in Power Electronics, 1(3), 174-185.
- Design Optimization of a Surface-Mounted Permanent-Magnet Motor With Concentrated Windings for Electric Vehicle Applications. IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 62(3), 1053-1064.
- Design and implementation of an observer-based state feedback controller for a pseudo direct drive. IET Electric Power Applications, 7(8), 643-653.
- A Rotor With Axially and Circumferentially Magnetized Permanent Magnets. IEEE TRANSACTIONS ON MAGNETICS, 48(11), 3230-3233.
- View this article in WRRO
- Design and operation of a magnetic continuously variable transmission. IEEE Transactions on Industry Applications, 48(4), 1288-1295.
- Dual-observer-based position-servo control of a magnetic gear. IET ELECTRIC POWER APPLICATIONS, 5(9), 708-714.
- A Brushless Permanent Magnet Machine With Integrated Differential. IEEE Transactions on Magnetics, 47(10), 4246-4249.
- A Magnetic Continuously Variable Transmission Device. IEEE Transactions on Magnetics, 47(10), 2815-2818.
- Design and Realization of a Linear Magnetic Gear. IEEE Transactions on Magnetics, 47(10), 4171-4174.
- Analysis of a Magnetic Screw for High Force Density Linear Electromagnetic Actuators. IEEE Transactions on Magnetics, 47(10), 4477-4480.
- A Linear Permanent-Magnet Motor for Active Vehicle Suspension. IEEE T VEH TECHNOL, 60(1), 55-63.
- Design and optimization of magnetic wheel for wall and ceiling climbing robot. 2010 IEEE International Conference on Mechatronics and Automation.
- View this article in WRRO
- A Novel Magnetic Harmonic Gear. IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 46(1), 206-212.
- Design Considerations for Tubular Flux-Switching Permanent Magnet Machines. IEEE TRANSACTIONS ON MAGNETICS, 44(11), 4026-4032.
- A Novel "Pseudo"' Direct-Drive Brushless Permanent Magnet Machine. IEEE TRANSACTIONS ON MAGNETICS, 44(11), 4349-4352.
- Modular three-phase permanent-magnet brushless machines for in-wheel applications. IEEE T VEH TECHNOL, 57(5), 2714-2720.
- Demagnetization assessment for three-phase tubular brushless permanent-magnet machines. IEEE T MAGN, 44(9), 2195-2203.
- A tubular flux-switching permanent magnet machine. JOURNAL OF APPLIED PHYSICS, 103(7).
- Effect of axial segmentation of permanent magnets on rotor loss in modular permanent-magnet brushless machines. IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 43(5), 1207-1213.
- A brushless permanent magnet motor with integrated torque-limiter. IEEE TRANSACTIONS ON MAGNETICS, 43(6), 2498-2500.
- A high-performance axial-field magnetic gear. J APPL PHYS, 99(8).
- A novel high-performance linear magnetic gear. IEEJ Transactions on Industry Applications, 126(10).
- A high-performance linear magnetic gear. JOURNAL OF APPLIED PHYSICS, 97(10).
- Real-time optimal torque control of fault-tolerant permanent magnet brushless machines. JOURNAL OF APPLIED PHYSICS, 97(10).
- Rotor eddy-current loss in permanent magnet brushless machines. IEEE TRANSACTIONS ON MAGNETICS, 40(4), 2104-2106. View this article in WRRO
- High-performance magnetic gears. J MAGN MAGN MATER, 272, E1727-E1729.
- Design, analysis and realisation of a high-performance magnetic gear. IEE P-ELECT POW APPL, 151(2), 135-143.
- View this article in WRRO
- Optimal torque control of fault-tolerant permanent magnet brushloss machines. IEEE TRANSACTIONS ON MAGNETICS, 39(5), 2962-2964. View this article in WRRO
- Modular permanent magnet brushless servo motors. J APPL PHYS, 93(10), 8772-8774.
- Rotor topologies for a switched-reluctance machine for the 'more-electric' aircraft engine. IEE P-ELECT POW APPL, 150(3), 311-318.
- Effect of optimal torque control on rotor loss of fault-tolerant permanent-magnet brushless machines. IEEE Transactions on Magnetics, 38(5 I), 3291-3293. View this article in WRRO
- Design variants of modular permanent magnet brushless machine. JOURNAL OF APPLIED PHYSICS, 91(10), 6973-6975.
- View this article in WRRO
- View this article in WRRO
- Servo Control of Magnetic Gears. IEEE/ASME Transaction on Mechatronics.
- Blanking induced damage in thin 3.2 % silicon steel sheets. Production engineering. View this article in WRRO
Conference proceedings papers
- Mass-specific thermal optimization of a heat sink for rotating 80kW SiC dual inverter exposed to extreme conditions. 2023 IEEE Transportation Electrification Conference and Expo, Asia-Pacific (ITEC Asia-Pacific). Chiang Mai, Thailand, 28 November 2023 - 28 November 2023. View this article in WRRO
- PCB busbar optimization for distributed DC link capacitors and parallel discrete SiC MOSFETs. 2023 IEEE Energy Conversion Congress and Exposition (ECCE) (pp 6553-6555). Nashville, TN, USA, 29 October 2023 - 29 October 2023. View this article in WRRO
- Concept design and optimization methodology of a wound field synchronous motor for commercial vehicle applications. 2023 IEEE Energy Conversion Congress and Exposition (ECCE), 29 October 2023 - 2 November 2023.
- Comprehensive analysis and design optimization of the Dual Active Bridge DC-DC converter with finite magnetizing inductance. 2023 IEEE Applied Power Electronics Conference and Exposition (APEC), 19 March 2023 - 23 March 2023.
- Analytical Modelling and Optimization of DC-Link Voltage Harmonic Spectra of Full-Bridge Modular Multilevel Converters for Buck and Boost Operation. 2023 IEEE Applied Power Electronics Conference and Exposition (APEC), 19 March 2023 - 23 March 2023.
- Analytical modelling of SiC MOSFET based on datasheet parameters considering the dynamic transfer characteristics and channel resistance dependency on the drain voltage. 2023 IEEE Applied Power Electronics Conference and Exposition (APEC), 19 March 2023 - 23 March 2023.
- Novel Passive Electrodynamic Magnetic Bearings. 2022 IEEE Energy Conversion Congress and Exposition (ECCE), 9 October 2022 - 13 October 2022.
- Design Optimization Methodology for High-Frequency Rotary Transformers for Contactless Power Transfer Systems. 2022 IEEE Energy Conversion Congress and Exposition (ECCE), 9 October 2022 - 13 October 2022.
- Analysis and Control of Grid-Tied Modular Multilevel Converters with a Passive Front-End Rectifier without LC Filter in the DC-Link. 2022 IEEE Energy Conversion Congress and Exposition (ECCE), 9 October 2022 - 13 October 2022.
- Performance analysis of a hybrid ferrite IPM/SynR traction machine with axially combined rotor structure. 11th International Conference on Power Electronics, Machines and Drives (PEMD 2022)
- Comparative evaluation of simplified and complex IPM machine models on control development for traction applications. Proceedings of IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society (pp 945-950). Lisbon, Portugal, 14 October 2019 - 17 August 2019. View this article in WRRO
- Thermal analysis and control development of interior PM traction machines. Proceeding of IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society (pp 1399-1404), 14 October 2019 - 17 August 2019. View this article in WRRO
- Performance of a hybrid powertrain employing a magnetic power split device. 2019 IEEE Energy Conversion Congress and Exposition (ECCE). Baltimore, MD, USA, 29 September 2019 - 3 October 2019. View this article in WRRO
- Rapid sizing concept of interior permanent magnet machine for traction applications. The Journal of Engineering, Vol. 2019(17) (pp 3956-3961) View this article in WRRO
- Control Development for Hybrid Vehicle Powertrain with Magnetic Continuously Variable Transmission. 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC), 7 November 2018 - 9 November 2018. View this article in WRRO
- Design considerations of a full bridge modular multilevel converter under variable DC link voltage. 2017 IEEE Energy Conversion Congress and Exposition (ECCE) (pp 504-510). Cincinnati, OH, USA, 1 October 2017 - 5 October 2017. View this article in WRRO
- Active suppression of photovoltaic system related harmonics in a DC microgrid. 2017 IEEE Energy Conversion Congress and Exposition (ECCE) (pp 1594-1601). Cincinnati, OH, USA, 1 October 2017 - 5 October 2017. View this article in WRRO
- Magnetically geared pseudo direct drive for safety critical applications. 2017 IEEE International Electric Machines and Drives Conference (IEMDC), 21 May 2017 - 24 May 2017.
- Dual rotor magnetically geared power split device for hybrid electric vehicles. 2017 IEEE International Electric Machines and Drives Conference (IEMDC), 21 May 2017 - 24 May 2017.
- Pseudo Direct Drive Electrical Machines for Flight Control Surface Actuation. 8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016)
- Dynamic behaviour of a multi-MW wind turbine. 2015 IEEE Energy Conversion Congress and Exposition (ECCE), 20 September 2015 - 24 September 2015.
- Rotor position estimation of a Pseudo Direct Drive PM machine using extended Kalman filter. 2015 IEEE Energy Conversion Congress and Exposition (ECCE), 20 September 2015 - 24 September 2015.
- Effects of laser cut on the performance of permanent magnet assisted synchronous reluctance machines. 2015 IEEE Magnetics Conference (INTERMAG), 11 May 2015 - 15 May 2015.
- Optimisation of magnetic gears for large wind turbines. 2015 IEEE 15th International Conference on Environment and Electrical Engineering (EEEIC), 10 June 2015 - 13 June 2015.
- A rapid concept development technique for electric vehicle powertrains. 2014 International Conference on Connected Vehicles and Expo (ICCVE), 3 November 2014 - 7 November 2014.
- Effects of unbalanced magnetic pull in large permanent magnet machines. 2014 IEEE Energy Conversion Congress and Exposition (ECCE), 14 September 2014 - 18 September 2014.
- A flywheel energy storage system for an isolated micro-grid. 3rd Renewable Power Generation Conference (RPG 2014)
- Unbalanced Magnetic Pull in Permanent Magnet Machines. 7th IET International Conference on Power Electronics, Machines and Drives (PEMD 2014)
- Slip recovery and prevention in Pseudo Direct Drive permanent magnet machines. 2013 IEEE Energy Conversion Congress and Exposition, 15 September 2013 - 19 September 2013.
- Speed control for a Pseudo Direct Drive permanent magnet machine with one position sensor on low-speed rotor. Proceedings of the 2013 IEEE International Electric Machines and Drives Conference, IEMDC 2013 (pp 986-992)
- A linear magnetic gear. Proceedings - 2012 20th International Conference on Electrical Machines, ICEM 2012 (pp 563-569)
- The Benefits of Duffing-type Nonlinearities and Electrical Optimisation of a Randomly Excited Energy Harvester (pp 657-667)
- Observer based state feedback controller design for pseudo direct drive. 6th IET International Conference on Power Electronics, Machines and Drives (PEMD 2012)
- Operating Strategies of Switched Reluctance Machines for Exhaust Gas Energy Recovery Systems. IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, Vol. 48(5) (pp 1478-1486)
- Design and operation of a magnetic Continuously Variable Transmission. 2011 IEEE International Electric Machines and Drives Conference, IEMDC 2011 (pp 312-317)
- Magnetic gear overload detection and remedial strategies for servo-drive systems. SPEEDAM 2010 - International Symposium on Power Electronics, Electrical Drives, Automation and Motion (pp 523-528)
- Characterisation and modelling of magnetic couplings and gears for servo control systems. IET Conference Publications, Vol. 2010(563 CP)
- Effect of optimal torque control on rotor loss of fault tolerant permanent magnet brushless machines. INTERMAG Europe 2002 - IEEE International Magnetics Conference
- Permanent magnet brushless drives for aircraft flight control surface actuation. IEE Colloquium. Electrical Machines and Systems for the More Electric Aircraft
- Effects of Unbalanced Magnetic Pull on NVH Performance of an Electric Drivetrain. SAE Technical Paper Series
- Effects of Load Conditions on Rotor Eddy Current Loss in Modular Permanent Magnet Machines. IEEE International Electric Machines and Drives Conference. Niagara Falls, Canada, May 2011.
- Optimal torque control of fault-tolerant permanent magnet brushless machines. Digest of INTERMAG 2003. International Magnetics Conference (Cat. No.03CH37401)
- The Application of Halbach Cylinders to Brushless AC Servo Motors. 7th Joint MMM-Intermag Conference. Abstracts (Cat. No.98CH36275)
- AN improved method for predicting iron losses in brushless permanent magnet DC drives. 1992. Digests of Intermag. International Magnetics Conference
- Novel permanent magnet machines using Halbach cylinders. 3rd International Power Electronics and Motion Control Conference. Beijing, China, 15 August 2000 - 18 August 2000.
- Operating Strategies for Switched Reluctance Generators in Exhaust Gas Energy Recovery Systems. IEEE International Electric Machines and Drives Conference. Niagara Falls, Canada, May 2011.
- View this article in WRRO
Patents
Other
- Design, Analysis and Experimental Evaluation of a Novel High-Speed High-Power Ferrite IPM Machine for Traction Applications. IEEE Transactions on Industry Applications, 1-12.
- Research students
Student Degree Status Primary/Secondary Alshammari S PhD Graduated Primary Elsaeid B A PhD Graduated Primary
Shanshal A K A PhD Graduated Primary Elmajdub A PhD Graduated Secondary
Khatab M F H PhD Graduated Secondary Shlimet S B PhD Graduated Secondary