Patent ID: 6965182

Claim:
A pole-change type motor comprising: a rotor; a stator for generating a torque of the rotor so as to perform a high-speed or low-speed operation of the motor through a pole change; and a relay section for controlling the pole change of the stator according to a load on the motor, the relay section comprising: a first relay section for switching to control an on/off operation of the motor; a second relay section for switching to change the pole of the stator from a two-pole type to a four-pole type and vice versa by changing wiring of the first and fourth main windings; a third relay section for switching to change a polarity by changing wiring of the first to fourth auxiliary windings, and the first and second compensation windings; and a fourth relay section for switching to control a start torque during a four-pole operation according to the switching operation of the third relay section.