Efficient Lightweight Electro-Magnetic PropUlsion System for Electric Vehicles

Electric vehicles (EVs) offer promising solutions for sustainable transport, but their development is hampered by a number of technical and technological challenges. To be competitive with internal combustion engines, EV must offer the same dynamics, autonomy range and comfort conditions, it has to be non-polluting and, most importantly, to be cost effective. The ELIMPUS project proposes an innovative solution of a purely electromagnetic propulsion system, capable to respond to current challenges of EVs. Without using only highly-energy magnetic materials, which are very expensive (like Nd-Fe-B and Sm-Co), the proposed electromagnetic propulsion system will operate at high speeds, in order to improve the power density of the traction chain and, by that, to extend the EV’s usage. The excitation of our proposed electromagnetic propulsion system will be based on other rare earths alloys, which are cheaper as cost. The wide range of speed operation will be performed without the need of linking in series multiple gears (which will affect the power density and the transmission’s efficiency), but using a new magnetic gear with variable transmission ratio. The final result of this project will be a new compact motor-gear electromagnetic propulsion system, highly efficient and having 15-20% smaller volume, 10-15% lighter and 25-30% cheaper, compared with existing market solutions.