Ultrahigh-speed permanent magnet synchronous motor applied to high-temperature environment

Abstract

The invention discloses an ultra-high-speed permanent magnet synchronous motor applied to a high-temperature environment. The motor adopts an inner claw pole stator topological structure and is composed of a plurality of claw pole stator unit modules. According to the structure, a cavity is formed in the middle of each stator iron core unit module, the section of each cavity gradually changes in the axial direction of a rotating shaft, due to the particularity of the structure of the stator iron core unit module, a soft magnetic composite material (SMC) is adopted, the SMC is manufactured through a powder metallurgy technology and mainly comprises a novel soft magnetic material of pure iron particles coated with an insulating material on the surface, and the required shape can be manufactured through mold pressing and then heat treatment, so that the manufacturing process is simple, the processing cost is low, and the method is suitable for a special cavity structure; and the invention provides an ultra-high-speed permanent magnet motor capable of reliably running for a long time in an extreme environment, wherein the motor comprises a novel stator structure type, an annular winding structure type and the like, and the structure type and the application field of the ultra-high-speed permanent magnet motor are widened.

Description

【Technical field】 [0001] The invention belongs to the technical field of high-speed permanent magnet motors, and in particular relates to an ultra-high-speed permanent magnet synchronous motor applied in a high-temperature environment. 【Background technique】 [0002] High-speed permanent magnet motors have the advantages of high power density, high efficiency, wide speed range and small size, and are widely used in micro gas turbines, centrifugal air compressors, flywheel energy storage, new energy distributed power generation and other fields. [0003] In addition, with the rapid development of national aerospace technology, national defense technology, polar deep sea exploration and other fields, high-speed permanent magnet motors also play a very important role with their excellent characteristics. However, these workplaces require the motor to have the ability to operate reliably for a long time in harsh environments such as high temperature, low temperature or vacuum. ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide an ultra-high-speed permanent magnet synchronous motor applied in a high-temperature environment, so as to solve the problem that the permanent magnet synchronous motor in the prior art is difficult to adapt to harsh environments such as high temperature, low temperature or vacuum. The problem

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