Five-phase 5N/4N-pole armature isolated fault-tolerant electrically excited doubly salient motor

Abstract

The invention relates to a five-phase 5N / 4N-pole armature isolated fault-tolerant electrically excited doubly salient motor, which is characterized in that a stator is provided with winding stator poles and non-winding stator poles, each winding stator pole is intensively wound with an armature winding and an excitation winding, and the adjacent winding stator poles are spaced by a non-winding stator pole, thereby enabling the adjacent winding stator poles to be reduced in mutual inductance and physically isolated, avoiding the inter-turn short circuit, and increasing the fault tolerance of the motor. The winding stator poles and the non-winding stator poles are uniformly distributed. The armature winding and the excitation winding in the invention are wound on the same stator pole, and there is no winding on the adjacent stator poles because the adjacent stator poles are spaced by the non-winding stator pole, thereby reducing the mutual inductance, reducing the loss, and increasing the fault tolerance of the motor. The excitation winding is the same in position relative to each phase of the armature winding, so that each phase of armature winding is the same in output, a symmetrical phase magnetic circuit is generated, and the electromagnetic force is balanced. In addition, the advantages of convenient magnetic adjustment, simple structure, easy heat dissipation and high reliability of the traditional electrically excited doubly salient motor are maintained.

Description

Technical field [0001] The invention relates to a double salient pole motor, in particular to an electrically excited double salient pole motor. Background technique [0002] Since the 90s of the last century, with the rapid development of high-performance permanent magnet materials and power electronic technology, doubly salient motors have achieved rapid development. Electrically excited doubly salient motors are developed on the basis of permanent magnet doubly salient pole motors, using excitation windings. Instead of stator magnets, compared with permanent magnets, electric excitation is easier to implement in field weakening control and voltage regulation during power generation. It has a wide range of application prospects in aerospace, wind power generation, and new energy vehicles. Double salient motor is a type of variable reluctance motor. There are two types of variable reluctance motors: unilateral salient pole and bilateral salient pole. The bilateral salient pole...

AI Technical Summary

Problems solved by technology

The excitation of traditional doubly salient electric excitation motors generally adopts distributed excitation. The excitation windings are wound on the stator poles of multiple doubly salient pole motors. There is a problem of phase magnetic circuit asymmetry, which will lead to loss of motor armature windings and rectification. The problem of uneven distribution of bridge losses

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