Novel E-Machine Design Using Magnetic Asymmetry for a Magnet-Free Axle Drive
In the automotive industry looks always for e-motors with high power density and efficiency combined with low cost and efficient manufacturing. Motors with rare-earth magnets are most commonly used today as traction motors in electric vehicles. However, the use of these magnets brings many environmental and economic disadvantages.
The wound field synchronous machine has proven to be a competitive alternative to these permanently excited synchronous machines. Especially in combination with a magnetic asymmetry, the performance and the production efficiency can be improved enormously.