Novel high-efficiency asynchronous motor

The invention is a high-efficiency motor with large starting torque. The invention relates to an asynchronous motor, concretely relates to a eight-pole coiling type asynchronous motor. The invention resolves the problem that the existing coiling type asynchronous motor can not compromise the existed starting current, the starting torque and the switching current when starting up the motor by star-triangle starting, edge-extending triangle starting, winding starting of priority access part or pole-changing starting and the like. The invention includes a set of stator winding with six lead-out terminals and two connections, and rotor winding composed by compound coils, which is characterized in that the stator winding is connected by Delta/Delta commutation method, the magnetic field of a set of Delta shape connection method stator winding is 6, 8, 10 poles, the magnetic field of a set of Delta connection method stator winding is 8 poles. Due to changing the normal connection of the stator winding when starting