Application of NdFeB magnet in motor industry

About 1 / 2 of the output of NdFeB magnet material is used to manufacture various magnet motors. There are many kinds of magnet motor. According to AC and DC classification, permanent magnet motor can be divided into 10 motor names. Permanent magnet AC motor includes permanent magnet synchronous generator, permanent magnet AC speed measuring motor, permanent magnet induction generator, ignition magnet motor and permanent magnet synchronous motor; Permanent magnet DC motor includes: permanent magnet DC servo motor, permanent magnet DC speed measuring motor, permanent magnet DC torque motor, permanent magnet stepping motor, permanent magnet DC brushless motor, piezoelectric motor, Hall motor, limited angle motor and voice coil motor

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The capacity of the motor is as small as a few fractional watts, as large as hundreds of kilowatts, which is widely used in modern science and technology and national economy and life departments. Compared with non permanent magnet motor, permanent magnet motor has the advantages of no excitation winding or exciter, high specific power, small volume, light weight, power saving and copper saving. The emergence of the third generation of rare earth permanent magnet rare earth iron-based permanent magnet materials promotes the development of permanent magnet motor: permanent magnet intelligent motor has the advantages of saving resources, high efficiency, small size, low noise and so on. Due to the high performance of the third generation Nd-Fe-B permanent magnet, the motor has the advantages of high power, high efficiency, smaller volume, lighter weight and no excitation loss.