The difference between the permanent magnet motor and the permanent magnet synchronous motor
The permanent magnet motor USES direct current, and there is a commutator. Permanent magnet synchronous motor with ac, no commutator.
Motor is generally referred to as the motor and generator, because the word generator is only a few professionals involved, so people say that the motor is the motor, the electrical energy into mechanical energy. Permanent magnet motor has dc motor and permanent magnet ac synchronous motor.
Broad sense permanent magnet motor is refers to the use of permanent magnet motor, don't need this kind of motor excitation, and can be roughly divided into: (commutator) permanent magnet dc motor, brushless dc motor (dc motor characteristics, electronic commutation), permanent magnet synchronous motor (ac motor), etc. The permanent magnet synchronous motor is a category of permanent magnet motors. The classification of the additional motor can be analysed from various angles, if viewed from the principle points roughly three categories: voltage control (direct torque control), such as brushless dc motor and brushless dc motor; Frequency control (direct speed control) such as induction motor and synchronous motor; Magnetic field frequency control (using alignment principles), such as step motor.
