Advantages and disadvantages of some motors

Update:07 May 2019
Summary:

1. Permanent magnet synchronous motor Features: Permane […]

1. Permanent magnet synchronous motor Features: Permanent magnet synchronous motor has simple structure, small size, light weight, low loss and high efficiency. Compared with DC motor, it has no shortcomings such as DC motor commutator and brush. Compared with asynchronous motors, it does not require reactive excitation current, so it has high efficiency, high power factor, large moment inertia ratio, stator current and stator resistance loss, and rotor parameters can be measured and controlled.

Compared with asynchronous motors, there are also disadvantages such as high cost and difficulty in starting. Compared with the ordinary synchronous motor, it eliminates the excitation assembly, simplifies the structure and improves the efficiency. The permanent magnet synchronous motor vector control system can realize high precision, high dynamic performance, wide range of speed regulation or positioning control. Therefore, the permanent magnet synchronous motor vector control system has attracted wide attention from scholars at home and abroad.

2. Reluctance synchronous motor

Features: Simple structure, no electromagnetic loss in the rotor, can avoid the noise of the switched reluctance motor and the significant torque pulsation during low speed operation.