cheap asynchronous motor asynchronous start method
A cage type starting winding is installed on the main magnetic pole boot of the motor. When starting, the excitation winding is first connected by a short resistance, and then the stator winding is connected to the grid. Relying on the asynchronous electromagnetic torque of the starting winding, the motor is lifted to a nearly synchronous speed, and the excitation current is fed into the excitation winding, and the main pole magnetic field is established. You can rely on the synchronous electromagnetic torque to pull the motor rotor into the synchronous speed.
