A Cylindrical Rotor High Speed ​​Switched Reluctance Motor

Abstract

The invention discloses a cylindrical rotor high-speed switched reluctance motor. The motor is composed of a stator, a rotor and a coil; Stator teeth number is 6, one coil is wound on each stator tooth, two coils on two stator teeth 180 degrees apart in space are connected into one phase winding in series or in parallel, totally three phases; The rotor is of a cylindrical structure and is internally arranged with two [shaped closing grooves; The closed grooves are uniformly arranged with a difference of 180 DEG, and the rotor is divided into three regions, the region one is a salient pole rotor with two teeth, the region two comprises two sector-shaped rotor blocks, and the region three comprises four magnetic bridges; The salient pole rotor and two sector rotor blocks are connected together by four magnetic bridges to form a smooth continuous cylindrical surface in the outer circle of the rotor. The motor of the invention has the characteristics of the traditional 6 / 2 pole switched reluctance motor and overcomes the problem of dead time, so that the motor has stronger starting capability and better output performance.

Description

technical field The invention relates to a high-speed switched reluctance motor with a cylindrical rotor, belonging to the technical field of switched reluctance motors. Background technique The stator and rotor of the switched reluctance motor are double-salient pole structures, and the rotor has no windings and permanent magnets. It has the characteristics of simple and firm structure, low cost, high temperature resistance and high-speed adaptability. It is widely used in civilian fields. The switching frequency and core loss of the switched reluctance motor are proportional to the number of teeth of the rotor, that is, as the number of rotor teeth increases, the core loss and switching frequency also increase. During high-speed or ultra-high-speed operation, the iron loss of the switched reluctance motor increases, resulting in a decrease in its efficiency and a higher temperature rise; in addition, the increase in the switching frequency increases the difficulty of mic...

AI Technical Summary

Problems solved by technology

During high-speed or ultra-high-speed operation, the iron loss of the switched reluctance motor increases, resulting in a decrease in its efficiency and a higher temperature rise; in addition, the increase in the switching frequency increases the difficulty of micro-processing calculations, which reduces the accuracy of position angle capture, which further leads to Control failure, failure of the motor system

Furthermore, due to the salient pole structure of the switched reluctance motor rotor, the wind loss is greater, the efficiency is reduced, and the problem of vibration and noise is further aggravated

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