High-reliability electric-excitation doubly salient starter generator

Abstract

The invention discloses a high-reliability electric-excitation doubly salient starter generator. The stator core has a salient pole structure, stator poles are arranged around the stator core, and thenumber of stator poles is 12N; the number of exciting windings is half that of the stator poles, each exciting winding is distributed across two stator poles, the adjacent exciting windings have opposite polarities, and the excitation windings are serially connected; an armature winding is wound on each stator pole, and each armature winding is wound according to the same polarity of the excitingwinding of the turn chain; and the phase angle difference between adjacent armature windings is 60 DEG C, each two armature windings with the phase difference of 180 DEG is combined, and a dual-threephase winding with the same flux change rate in each phase through series-opposing connection. The rotor core has a salient pole structure, and the number of rotor poles is 10N or 14N. Back electromotive forces of the phases are symmetrical, the flat top portion is wider, the motor power density is larger, the fault tolerance is strong, and the torque ripple and the voltage ripple of the electric-excitation doubly salient motor are effectively suppressed.

Description

technical field [0001] The invention relates to the technical field of special motor bodies, in particular to a high-reliability electric excitation double salient pole starter generator. Background technique [0002] Electric excitation double salient pole motor can conveniently realize dual functions of starting and power generation. It not only has a switched reluctance motor with a simple rotor structure, no windings and permanent magnets, strong high temperature and high speed operation capabilities, and physical and electromagnetic characteristics of each phase winding on the stator. It has the advantages of independence, strong fault tolerance and high reliability, and also has the advantages of simple power generation control of the electric excitation synchronous motor and high reliability of the control circuit. Therefore, the electrically excited double salient pole motor can constitute a very competitive starting / generating system; especially as a brushless DC ge...

AI Technical Summary

Problems solved by technology

Chinese invention patent: A low-torque pulsating electric excitation doubly salient brushless DC motor and its control system, application number (201510134898.6), which discloses a low-torque pulsating electric excitation doubly salient brushless DC motor and its control In this system, two-phase windings with complementary back EMF waveforms in the six-phase stator windings are connected in reverse series to form U, V, and W three-phase windings, and the symmetry of the back EMF waveforms of the three-phase stator windings is significantly enhanced. The back EMF waveform of the BLDC motor is similar to that of the permanent magnet brushless DC motor, but this design is equivalent to the combination of two three-phase double-salient pole motors, and the flat top part of the back EMF is less than 120°, and commutation torque ripple still exists

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