Rare earth permanent magnet motor

Rare earth permanent magnet motor is new type permanent motor that developed from the early 1970s. It has same working principle with traditional electric motor but different magnet materials. There are four main types of magnets: ceramic (ferrite), AlNICo, Samarium Cobalt (SmCo), and Neodymium (NdFeB). The third-generation rare earth permanent magnet NdFeB is the strongest permanent magnet in contemporary magnets. In cost aspect, since the main raw material iron of the NdFeB magnet is very cheap, so its price is much lower than Samarium Cobalt magnet. In addition, NdFeB magnets have better mechanical properties than Samarium Cobalt magnet, which make them easier to cut and drill for complex shape. Compare with traditional electric motor, Rare earth permanent magnet motor has lots of advantages like simple structure, stable operation, small size, light weight, low magnet loss and high efficiency. Therefore, Rare Earth permanent magnet is popular in new energy vehicle field.