A kind of asynchronous starting vernier motor

Abstract

The invention discloses an asynchronous starting vernier motor which comprises a stator and a rotor. The stator comprises a stator iron core and stator windings. The rotor comprises a rotor iron core,rotor damping windings, rotor starting windings and permanent magnets. The stator iron core is annular, and the inner ring surface of the stator iron core is provided with a plurality of open slots used as stator slots along the circumferential direction and used for accommodating stator windings. The rotor iron core is coaxially sleeved in the stator iron core. A plurality of rotor grooves are formed in the outer surface, opposite to the inner ring surface of the stator iron core, of the rotor iron core in the circumferential direction. The tops of the rotor grooves are used for containing rotor damping windings. The bottoms of the rotor grooves are used for containing rotor starting windings. A plurality of magnetic barriers are formed in the inner surface, opposite to the inner ring surface of the stator iron core, of the rotor iron core in the circumferential direction. The rotor iron core is divided into a magnetic bridge and an iron core part by the magnetic barriers. The plurality of permanent magnets are Spoke-shaped and are arranged right below the rotor grooves. Meanwhile, the permanent magnets are also arranged in the magnetic barriers at the inner side of the rotor. Bymeans of the rotor structure, the reduction of steady-state torque and starting torque due to the fact that the magnetic circuit is interrupted by the permanent magnets, can be avoided.

Description

technical field [0001] The invention belongs to the technical field of electric motors, and more specifically relates to an asynchronous starting vernier electric motor. Background technique [0002] my country is rich in rare earth resources, and the research level of rare earth materials and rare earth permanent magnet motors has reached the international advanced level. Therefore, giving full play to the advantages of rare earth resources, vigorously researching and promoting the application of various permanent magnet motors represented by rare earth permanent magnet motors has important theoretical significance and practical value for our country. Compared with traditional asynchronous motors, permanent magnet motors are simple in structure and reliable in operation; small in size and light in weight; low in loss and high in efficiency; the vernier motor has the advantage of high torque density, and its torque density can reach that of ordinary permanent magnet motors ...

AI Technical Summary

Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides an asynchronous starter vernier motor, which aims to solve the problem that the magnetic circuit of the few-pole magnetic field of the existing Spoke type rotor is interrupted by the permanent magnet

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