A wind-water hybrid cooling high-speed permanent magnet motor with hybrid protection for the rotor

Abstract

The invention relates to a wind-water hybrid cooling high-speed permanent magnet motor with a rotor adopting hybrid protection, which belongs to the technical field of motors. It is characterized in that: a cooling water jacket is arranged outside the casing, and the inside of the cooling water jacket is a circumferential spiral water channel; the stator includes a stator core, a stator winding and a winding pressure plate, the stator winding is arranged on the stator core, and the winding pressure plate is set At both ends of the stator core, there is an axial inner air duct between the stator winding and the outer periphery of the rotor; there are air inlets and air outlets on the casing; the hybrid sheath is composed of carbon fiber and alloy shielding sleeves, and the permanent magnets are circumferentially It is divided into several permanent magnet blocks, and the axial direction is made of multi-section bonding. The invention can not only mechanically solve the problem that the permanent magnet is broken due to a large tensile stress under high-speed rotation, but also solve the problems of high loss density, difficult heat dissipation and high temperature rise of high-power high-speed motors. It also avoids the problem that permanent magnets are prone to irreversible demagnetization under high temperature conditions.

Description

technical field [0001] The invention belongs to the technical field of motors, and relates to a high-speed permanent magnet motor whose rotor adopts mixed wind and water cooling for protection. Background technique [0002] Due to the high speed, high power density and small size, the high-speed motor can effectively save materials; due to the small moment of inertia, the dynamic response is fast; the high-speed motor can be directly connected with the working machine or load, eliminating the traditional mechanical transmission device , thus reducing noise and improving the efficiency of the transmission system. The research and application of high-speed motors meet the needs of economic development for energy saving and emission reduction. At present, it has become one of the research hotspots in the field of international electrical engineering. It has broad application prospects. [0003] Permanent magnet motors are most suitable for high-speed motors due to their simpl...

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: The present invention provides a wind-water hybrid cooling high-speed permanent magnet motor whose rotor adopts hybrid protection. The problem of high loss density of the motor, difficulty in dissipating heat, and excessive temperature rise seriously affects the reliability and operating life of the motor. At the same time, the precise control of the temperature, speed, active and reactive power of the motor, motor vibration and temperature of important parts Online monitoring of parameters and parameters can ensure the reliable operation of the motor system

Images