All Outputs (7)

In-Slot Oil Cooling Arrangement of Hairpin Windings for High Power Density EV Traction Motors (2024)
Presentation / Conference Contribution
Mifsud, L. P., Connor, P. H., Walker, A., Zou, T., Huang, H., Ren, X., Batho, G., Tweedy, O., Gerada, C., & Egger, C. (2024, October). In-Slot Oil Cooling Arrangement of Hairpin Windings for High Power Density EV Traction Motors. Presented at 2024 IEEE Vehicle Power and Propulsion Conference, VPPC 2024, Washington, DC, USA

Ambitious electrification roadmaps for the automotive industry have prompted a revolution in winding technology for traction motors in electric vehicles (EV). Hairpin windings with reduced power losses and improved coolability are overtaking the mark... Read More about In-Slot Oil Cooling Arrangement of Hairpin Windings for High Power Density EV Traction Motors.

High Pole Number Outer-Rotor SPM Machine for Sustainable 150kW High-Speed EV Traction (2024)
Presentation / Conference Contribution
Walker, A., Zou, T., Mifsud, L. P., Connor, P., Huang, H., Ren, X., Batho, G., Tweedy, O., Gerada, C., & Kaloun, A. (2024, October). High Pole Number Outer-Rotor SPM Machine for Sustainable 150kW High-Speed EV Traction. Presented at 2024 IEEE Vehicle Power and Propulsion Conference, VPPC 2024, Washington, DC, USA

The ambitious roadmaps of electric vehicle (EV) powertrains are pushing traction motors to achieve step-change performance improvements in power density, efficiency, and cost by 2035. Limited by technology bricks such as materials, manufacturing and... Read More about High Pole Number Outer-Rotor SPM Machine for Sustainable 150kW High-Speed EV Traction.

Electromechanical Analysis of Low Voltage Faults in a Magnetically Coupled Synchronous Generator Set (2022)
Presentation / Conference Contribution
Tweedy, O. R., Akcay, Y., Giangrande, P., Galea, M., & Garvey, S. D. (2022, September). Electromechanical Analysis of Low Voltage Faults in a Magnetically Coupled Synchronous Generator Set. Presented at 2022 International Conference on Electrical Machines (ICEM), Valencia, Spain

This paper investigates the magneto-mechanical performance of a magnetically coupled, engine driven synchronous generator set exposed to a severe low voltage grid fault. A multi-physics model of a generator, coaxial magnetic coupling and diesel engin... Read More about Electromechanical Analysis of Low Voltage Faults in a Magnetically Coupled Synchronous Generator Set.

Design and Development of an Axial Magnetic Coupling for Reliable Aircraft Power Generation (2022)
Presentation / Conference Contribution
Akcay, Y., Tweedy, O., Giangrande, P., & Galea, M. (2022, June). Design and Development of an Axial Magnetic Coupling for Reliable Aircraft Power Generation. Presented at 2022 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), Sorrento, Italy

This paper introduces an axial magnetic coupling (AMC) that can be employed between the engine and the constant speed drive unit (CSDU) or generator in most commercial aircrafts to transfer torque/speed safely and ensure overload torque protection ca... Read More about Design and Development of an Axial Magnetic Coupling for Reliable Aircraft Power Generation.

Design and Analysis of a Double Coaxial Magnetic Coupling to Improve Torque Density (2021)
Presentation / Conference Contribution
Akcay, Y., Tweedy, O., Giangrande, P., & Galea, M. (2021, October). Design and Analysis of a Double Coaxial Magnetic Coupling to Improve Torque Density. Presented at IECON 2021 - 47th Annual Conference of the IEEE Industrial Electronics Society, Toronto, Canada

Coaxial magnetic couplings are an attractive alternative to traditional mechanical machine couplings which bring several desirable advantages but are limited by their relatively low torque density and torque to mass ratio. The optimum magnetic design... Read More about Design and Analysis of a Double Coaxial Magnetic Coupling to Improve Torque Density.

Fast and Accurate 2D Analytical Subdomain Method for Coaxial Magnetic Coupling Analysis (2021)
Journal Article
Akcay, Y., Giangrande, P., Tweedy, O., & Galea, M. (2021). Fast and Accurate 2D Analytical Subdomain Method for Coaxial Magnetic Coupling Analysis. Energies, 14(15), Article 4656. https://doi.org/10.3390/en14154656

Magnetic couplings (MCs) enable contactless speed/torque transmission via interactions between the magnetic fields of permanent magnets (PMs) rather than a physical mechanical connection. The contactless transmission of mechanical power leads to impr... Read More about Fast and Accurate 2D Analytical Subdomain Method for Coaxial Magnetic Coupling Analysis.

Magneto-mechanical Design and Development of a Coaxial Magnetic Coupling with Optimization of Torque to Mass Ratio (2021)
Presentation / Conference Contribution
Tweedy, O., Akcay, Y., Giangrande, P., & Galea, M. (2021, May). Magneto-mechanical Design and Development of a Coaxial Magnetic Coupling with Optimization of Torque to Mass Ratio. Presented at 2021 IEEE International Electric Machines and Drives Conference, IEMDC 2021, Hartford, CT, USA

This work covers the design and analysis of a coaxial magnetic coupling with the aim to optimize the torque to mass ratio. Magnetic couplings provide several unique benefits over standard mechanical couplings that are made possible via magnetic torqu... Read More about Magneto-mechanical Design and Development of a Coaxial Magnetic Coupling with Optimization of Torque to Mass Ratio.