2、步进电机

3、单向异步电动机

异步电动机又称感应电动机，是由气隙旋转磁场与转子绕组感应电流相互作用产生的电磁转矩，从而实现机电能量转换为机械能量的一种交流电机。

Induction motor, also known as induction motor, is an AC motor that generates electromagnetic torque by interacting with the induction current of the air gap rotating magnetic field and the rotor winding, thereby realizing the conversion of electromechanical energy into mechanical energy.

▲ 一台拆开的单相异步电动机

永磁电机是利用永磁体提供磁场的电动机。电动机做功，需要2个条件，一个是存在磁场，另外一个是磁场中有运动的电流存在。

A permanent magnet motor is an electric motor that uses a permanent magnet to provide a magnetic field. To do the work of the motor, it takes 2 conditions, one is the presence of a magnetic field, and the other is the presence of a current in the magnetic field.

电机剖视图展示其工作原理：