Permanent magnet synchronous motor belongs to asynchronous start permanent magnet synchronous motor, and its magnetic field system consists of one or more permanent magnets, usually inside a squirrel-cage rotor welded with cast aluminum or copper bars, installed according to the required number of poles. Magnetic poles with permanent magnets. The stator structure is similar to that of an asynchronous motor.
When the stator winding is connected to the power supply, the motor starts to rotate according to the principle of asynchronous motor, and when it accelerates to the synchronous speed, the synchronous electromagnetic torque generated by the rotor permanent magnetic field and the stator magnetic field (the electromagnetic torque generated by the rotor permanent magnetic field and the The reluctance torque generated by the magnetic field of the stator) pulls the rotor into synchronization, and the motor enters into synchronous operation.
Reluctance synchronous motor Reluctance synchronous motor, also known as reactive synchronous motor, is a synchronous motor that generates reluctance torque by using the unequal reluctance of the rotor’s quadrature axis and direct axis. Its stator is similar to that of an asynchronous motor, but the rotor structure different.