Asynchronous starting permanent magnet synchronous motor rotor with tangent magnetic circuit

Abstract

The invention relates to a motor, in particular to an asynchronous starting permanent magnet synchronous motor rotor with a tangent magnetic circuit. The problems of weak mechanical strength and high magnetic leakage factor of the conventional asynchronous starting permanent magnet synchronous motor rotor are solved. The asynchronous starting permanent magnet synchronous motor rotor with the tangent magnetic circuit comprises a steel shaft and a cast aluminum squirrel cage rotor. An even number of radial rectangular permanent magnet slots are uniformly distributed on the section of the cast aluminum squirrel cage rotor. Rectangular permanent magnets are arranged in the radial rectangular permanent magnet slots. A non-magnetic conducting sleeve is pressed on the surface of the steel shaft. An inner circle of the cast aluminum squirrel cage rotor is pressed on the outer surface of the non-magnetic conducting sleeve. An opening is reserved at the inner end of each radial rectangular permanent magnet slot. By the brand-new structure, the problems of weak mechanical strength and high magnetic leakage factor of the conventional asynchronous starting permanent magnet synchronous motor rotor are effectively solved; and the rotor is applied to various asynchronous starting permanent magnet synchronous motors.

Description

technical field [0001] The invention relates to a motor, in particular to a tangential magnetic circuit asynchronous start permanent magnet synchronous motor rotor. Background technique [0002] The asynchronous start permanent magnet synchronous motor consists of a stator and a rotor. Among them, the magnetic circuit structure of the rotor of the asynchronously started permanent magnet synchronous motor can be further divided into a radial magnetic circuit structure, a tangential magnetic circuit structure, and a hybrid magnetic circuit structure. Practice has shown that the rotors with tangential magnetic circuit structures generally have the problems of low mechanical strength and large magnetic leakage coefficient. The specific analysis is as follows: figure 1 , 2 As shown, the rotor with a tangential magnetic circuit structure includes a steel shaft 1 and a cast aluminum squirrel cage rotor 2; the cross section of the cast aluminum squirrel cage rotor 2 has an even n...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of low mechanical strength and large flux leakage coefficient of the existing asynchronous start permanent magnet synchronous motor rotor, the present invention provides a tangential magnetic circuit asynchronous start permanent magnet synchronous motor rotor

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