Volvo Cars - Design and simulation of Variable Flux e-motors using Rare-Earth-Free magnets
Volvo Cars - Design and simulation of Variable Flux e-motors using Rare-Earth-Free magnets
Traction electrification is pushing the demand of rare earth magnets, contributing to price surge and supply shortage. Permanent Magnet (PM) machines with NdFeB PMs are the stateof-the-art solution for pure electric and hybrid electric powertrains, and the replacement of Nd-based magnets with rare-earth free counterparts is an open challenge for electrical engineers and for material scientists. New high-strength PM materials are under development, such as the “clean earth magnets” based on iron and nitrogen. Their low coercivity and high strength pave the way for Variable flux (VF) technology . In VF machines the magnets can be magnetized and demagnetized trough controlled current pulses during operation, introducing additional degree of freedom that can be potentially used to enhance efficiency in drive cycle.
The thesis project deals with the design of a VF-PM motor for vehicular traction application, and the comparative assessment of performance and sustainability of the solution considering different magnet materials.
Additional info is in the following document.
(216,69 kB)PLEASE CONTACT prof. Gianmario Pellegrino and Simone Ferrari BEFORE ANY CONTACT WITH THE COMPANY.