Homopolar four-phase brushless AC generator

Abstract

According to the homopolar four-phase brushless alternating-current generator provided by the invention, armature reaction magnetic fields between corresponding phases in the homopolar four-phase brushless alternating-current generator can be mutually counteracted, so that the influence on main magnetic flux is reduced, and the output power is effectively ensured. The motor comprises a stator and a rotor, the stator comprises two stator iron cores, the rotor is arranged between the stator iron cores, the rotor is driven by a driving mechanism and can rotate relative to the two stator iron cores, fixedly-connected end covers are arranged on the outer sides of the two stator iron cores respectively, and fixedly-connected excitation support windings are distributed between the two end covers. Radial stator slots are distributed on the opposite surfaces of the two stator cores, four-phase armature windings are uniformly distributed in the stator slots, the four-phase armature windings are arranged in the stator slots in an overlapping manner, and the difference between two adjacent-phase armature windings is 90 degrees; the number of groups of each phase of armature windings is equal to the number of salient poles of the rotor, and the span of each group of each phase of armature windings is equal to the width of each salient pole of the rotor.

Description

technical field [0001] The invention relates to the technical field of generators, in particular to a homopolar four-phase brushless alternator. Background technique [0002] In a synchronous generator, when current passes through the armature winding, the winding itself generates a magnetic field called the armature magnetic field. The armature magnetic field will distort and weaken the main magnetic field, resulting in an armature reaction. Especially in homopolar generators, such as Chinese invention patent CN201710725188.X, which discloses a brushless alternator and power generation technology, because when the rotor salient pole rotates and cuts the armature winding, the magnetic flux in the armature winding is single Direction, only size changes, not forward and reverse alternating, so that each phase winding only produces direct-axis armature reaction, but no quadrature-axis armature reaction. The direct-axis armature reaction magnetic field seriously weakens and har...

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Problems solved by technology

[0003] For the existing brushless alternator in the power generation process, because of the armature reaction of each phase winding, the armature reaction magnetic field of each phase seriously weakens the main magnetic flux and causes distortion, resulting in low output voltage. To solve the problem of low power, the present invention provides a homopolar four-phase brushless alternator, the armature reaction magnetic field between the corresponding phases inside it can cancel each other, thereby reducing the influence on the main magnetic flux, effectively ensuring Output Power

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