A brief overview of the pole motor

A pole motor is a kind of single-phase induction AC motor. The auxiliary winding made up of a copper ring is called the cover coil. In order to provide a magnetic field to the rotor, the current in this coil delays the magnetic flux of that part of the magnetic pole. The direction of rotation reaches the shielding ring from the side of the no cover.

Basic working principle of the hood motor

The shielded coil (shielded ring) is configured to offset the shaft of the hood from the central axis of the main pole.

When the power is connected to the stator, the magnetic flux of the main part of the magnetic pole is used as the auxiliary winding of the transformer to induce the voltage of the hood coil.

There is a phase difference between the current of the auxiliary winding of the transformer and the current of the main winding.

The current of the pole coil is in phase difference with the current of the main excitation winding.

Therefore, the magnetic flux of the pole is in phase difference with the magnetic flux of the main pole.