Bilateral consequent pole type hybrid excitation brushless motor

Abstract

The invention discloses a bilateral consequent pole type hybrid excitation brushless motor which comprises a first stator and rotor, a second stator and rotor, an armature winding and an annular direct current excitation winding. The first stator and rotor and the second stator and rotor are arranged in parallel in the axial direction. The first stator and rotor comprises a stator I and a rotor I; the second stator and rotor comprises a stator II and a rotor II; the first stator and the second stator jointly form a stator, and stator iron core poles and stator permanent magnet poles are evenly and alternately distributed in the circumferential direction. The rotor I and the rotor II jointly form a rotor, and rotor iron core poles and rotor permanent magnet poles are evenly and alternately distributed in the circumferential direction. The armature winding is wound in the stator slot; and the annular direct current excitation winding is arranged in an axial air gap between the first stator and the second stator. The annular direct-current excitation winding is arranged between the stator I and the stator II, space constraint does not exist between the annular direct-current excitation winding and the armature winding in the stator groove, the problem that the output capacity and the magnetic adjusting capacity of a traditional stator permanent magnet type hybrid excitation motor are mutually restricted is solved, and the magnetic adjusting efficiency is high.

Description

technical field [0001] The invention relates to the field of motor design and manufacture, in particular to a double-sided alternating pole hybrid excitation brushless motor. Background technique [0002] Permanent magnet motors have the advantages of high torque / power density, high efficiency, and high power factor, and have been widely used in many applications such as household appliances, electric vehicles, and aerospace. According to the position classification of permanent magnets, permanent magnet motors are divided into rotor permanent magnet motors and stator permanent magnet motors, both of which are unilateral permanent magnet motors. [0003] At present, the rotor permanent magnet type motor is the most commonly used. The stator permanent magnet motor has been a research hotspot for more than ten years. Its permanent magnets and armature windings are located on the stator, while the rotor has neither windings nor permanent magnets. Because of its simple structu...

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Problems solved by technology

[0007] The DC excitation winding of the stator permanent magnet hybrid excitation motor is arranged in the stator slot, and the brushless excitation is simple and reliable; however, there are space constraints in the armature winding and the excitation winding, which lead to mutual constraints on the output capacity and the magnetic field adjustment ability of the motor.

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