Five-phase switch magnetic resistance motor

Abstract

The invention relates to a five-phase switch magnetic resistance motor, comprising a stator, a rotor and stator windings, wherein the inner circular surface of the stator is uniformly distributed with stator teeth; the outer surface of the rotor is uniformly distributed with rotor teeth; the stator windings comprise five phases of windings; the number of teeth of the stator is 10i, and the number of teeth of the rotor is 10i-4 or 10i-6, wherein i is an integer more than 0; the stator windings are dual-layer windings and are uniformly distributed in the stator; each phase of winding is formed by in-series connection of two coils which are symmetrically distributed in the stator; and the pitch of the coils is 3. The five-phase switch magnetic resistance motor adopting the structure has the advantages of higher performance-volume ratio, lower copper consumption, higher efficiency and smooth running at low rotating speed.

Description

technical field [0001] The invention relates to the field of motors, in particular to a five-phase switched reluctance motor. Background technique [0002] The traditional switched reluctance motor has a stator and rotor with a salient pole structure. Through a simple operating drive circuit, the coils of each phase of the stator winding are energized in a certain sequence to generate pulsating magnetic flux. The rotor is subjected to magnetic torque in the pulsating magnetic field, and thus rotates. Since there are no windings and permanent magnets on the rotor, the motor has a simple structure and reliable operation, and can achieve wide-range speed regulation by adjusting the on-off frequency of the drive circuit for each phase coil. Therefore, it can be widely used in various occasions requiring speed regulation and high efficiency. [0003] But the traditional five-phase switched reluctance motor still has the following deficiencies: [0004] First, the traditional f...

AI Technical Summary

Problems solved by technology

[0004] First, the traditional five-phase switched reluctance motor is a concentrated winding, there is no mutual inductance between the phase windings, and the magnetic potential does not superimpose during operation

And only 1.5 windings participate in the operation on average during operation, so that the performance-to-volume ratio of the motor is not high, that is, the torque of the motor with the same volume is small

[0005] Second, traditional five-phase switched reluctance motors usually use concentrated windings, the magnetic potential is not superimposed during operation, the current flowing through the windings during operation is relatively large, the copper consumption is high, and the efficiency is low

[0006] Third, the traditional five-phase switched reluctance motor operates at a low frequency at a low speed, and the rotation is not stable

Images