Double-Y 30 DEG phase shift dual-redundancy permanent magnet synchronous motor without electromagnetic coupling between two phases of windings

Abstract

The invention discloses a double-Y 30 DEG phase shift dual-redundancy permanent magnet synchronous motor without electromagnetic coupling between two phases of windings. Two sets of independent three-phase symmetrical windings are placed on a stator core, the phase difference of the electromotive force between the corresponding phases of each three-phase symmetrical winding is 30 DEG electrical angle, the two sets of windings are powered by two controllers independently, and the two sets of windings can work simultaneously or separately. The coils of each phase of winding are concentrated windings, and the winding ends do not overlap. Moreover, by placing small teeth and placing high-temperature-resistant insulation materials on both sides of the small teeth, the two phases of windings areelectrically isolated from each other, the leakage mutual inductance between the two phases of windings corresponding to an end leakage magnetic field is extremely small, and there is no groove mutual leakage inductance, and at the same time, the thermal coupling between the two phases of windings is low. The mutual inductance between the two phases of windings corresponding to an armature reaction magnetic field is extremely small, and it can be assumed that there is no electromagnetic coupling between the two phases. During double redundancy operation, the armature reaction in the motor hasa low magnetomotive force harmonic component.

Description

technical field [0001] The invention relates to a double redundancy permanent magnet synchronous motor. In particular, it relates to a double-redundancy permanent magnet synchronous motor with low thermal coupling and no electromagnetic coupling between windings of each phase with 2Y phase shift of 30°. Background technique [0002] The permanent magnet synchronous motor has many advantages. In the electric drive system that does not allow downtime operation, the use of double redundancy permanent magnet synchronous motor can improve the reliability of the system. At present, double redundancy permanent magnet synchronous motors generally adopt two structural forms including parallel connection and series connection. Among them, the double-redundancy permanent magnet synchronous motor with series structure is to install two sets of independent stators and rotors coaxially. Its volume and weight are relatively large, and it is difficult to coordinate and control the redundan...

AI Technical Summary

Problems solved by technology

Although the parallel structure double redundancy permanent magnet synchronous motor solves the problem of large volume and weight, some parallel structure double redundancy permanent magnet synchronous motors still have electromagnetic coupling between the two sets of windings; some parallel structure double redundancy permanent magnet Although the electromagnetic coupling is eliminated between the two sets of windings of the synchronous motor, the double-redundancy permanent magnet synchronous motor with double-redundancy permanent magnet synchronous motor has low thermal coupling and no electromagnetic coupling between the phase windings of the double Y phase shift. Harmony of the armature reaction magnetomotive force The wave component is high, and its performance needs to be further improved

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