Permanent magnet synchronous motor tail type electric spindle

In order to realize the energy conversion of synchronous generator, a DC field is needed to generate the DC current of this field, which is called the excitation current of generator. According to the supply mode of excitation current, the generator that obtains excitation current other power sources is called other excitation generator, the generator that obtains excitation power the generator itself is called self excitation generator.

Advantages: permanent magnet synchronous motor has the advantages of simple structure, small volume, light weight, small loss, high efficiency, high power factor, etc. it is mainly used for the replacement of high-performance servo drive system DC motor with fast response, wide speed range accurate positioning.

Disadvantages: the maximum torque is limited by the demagnetization of permanent magnet, the anti-seismic ability is poor, the high speed is limited, the power is small, the motor structure is complex, the cost is high the starting is difficult.