Rotor double-winding pole-changing asynchronous starting vernier motor

Abstract

The invention discloses a rotor double-winding pole-changing asynchronous starting vernier motor which comprises a stator and a rotor. The stator comprises a stator core and stator windings. The rotorcomprises a rotor 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 with 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 groovesare used for containing rotor damping windings, and the bottoms of the rotor grooves are used for containing rotor starting windings. The plurality of permanent magnets are arranged in the rotor ironcore. According to the rotor double-winding variable-pole asynchronous starting vernier motor provided by the invention, the double-winding rotor is adopted, and a pole changing mode is utilized. Therefore, the electromagnetic torque exceeding a common asynchronous starting permanent magnet motor is output during steady-state operation. Meanwhile, the starting performance can be ensured, and thesteady-state performance can be also considered.

Description

technical field [0001] The invention belongs to the technical field of motors, and more specifically relates to a vernier motor with double rotor windings and pole-changing asynchronous starters. 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...

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Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a pole-changing asynchronous starter vernier motor with double rotor windings, aiming to solve the problem that the existing asynchronous starter vernier motors cannot balance the starting performance and steady-state performance

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