Used ferrite magnet motors to confirm that an output of over 100kW, which is necessary for application to BEV and PHEV traction motors, could be achieved

Rotor equipped with a ferrite magnet

With the growing demand for neodymium magnets used in the traction motors and generators of xEVs, there is a concern that there will be an increase in the resource risk of heavy rare earths, which are particularly limited in supply. In this context, Proterial tested and evaluated a prototype of the highperformance ferrite magnet motor stone (NMFTM-15)* and verified that it can be used in BEVs and PHEVs, with an output of over 100kW. Since ferrite magnets have higher electrical resistance than neodymium magnets, they also contribute to the suppression of eddy current loss during high-speed motor rotation, and can be expected to contribute to solving issues faced by customers such as reducing resource risk and controlling costs.

  1. *Proterial’s proprietary material that exhibits the world’s highest level of magnetic properties for mass-produced ferrite magnets (as of June 2023, according to Proterial’s research).