Four-phase electro-magnetic doubly salient motor

Abstract

The invention discloses a four-phase electro-magnetic doubly salient motor, and the motor comprises a stator iron core, 8N stators, a rotor and an excitation winding; the inner cavity of the stator iron core is a hollow circle, the stators are of salient pole structures and are uniformly distributed in the circumference of the inner cavity of the stator iron core, and N is a positive integer; each excitation winding is wound across two adjacent stators; the rotor is also of a salient pole structure and is concentrically arranged in the inner cavity of the stator iron core; armature windings are placed in tooth grooves of the stator, the armature windings of all phases are the same in distribution position from excitation windings, the magnetic circuits are consistent, the flux linkage change rates of all the phases are equal, the phase angle difference between every two adjacent armature windings is 90 degrees, the windings of all the phases with the phase difference of 180 degrees are reversely connected in series and combined, and four-phase windings with the same flux linkage change rates of all the phases are formed; therefore, four-phase counter potential symmetry is realized.

Description

technical field [0001] The invention relates to the technical field of special motor body design, in particular to a four-phase electric excitation double salient pole motor. Background technique [0002] Double salient pole motor is a type of variable reluctance motor. Its stator and rotor are all salient pole structures. There is no winding on the rotor. The structure is simple and it can run at high temperature and high speed. The windings of each phase on the stator of the electrically excited doubly salient pole motor are independent of each other and are excited through the field winding. Since there is no permanent magnet, there is no demagnetization problem when running at high temperature and high speed. At the same time, the electrically excited double salient pole motor has the advantages of simple control circuit and high reliability in the power generation state. Therefore, the electrically excited double salient pole motor is more and more frequently used in t...

AI Technical Summary

Problems solved by technology

The doubly salient pole motor in the prior art generates large voltage fluctuations, and has poor fault-tolerant control capability when the motor is running, so it cannot be adapted to the fields of aerospace, automobiles and ships.

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