Symmetrical rotor structure of double-end axial magnetic circuit hybrid excitation motor

Abstract

The invention provides a symmetrical rotor structure of a double-end axial magnetic circuit hybrid excitation motor. The structure comprises a rotating shaft, an N-pole outer iron core, an S-pole outer iron core, an N-pole inner iron core, an S-pole inner iron core, a right excitation winding, a right excitation bracket, a left excitation winding and a left excitation bracket. The whole rotor structure is centrosymmetric about the center of the rotating shaft, the N-pole inner iron core and the S-pole inner iron core are symmetrically matched with each other with the rotating shaft as the center, and the N-pole outer iron core and the S-pole outer iron core are correspondingly installed outside the N-pole inner iron core and the S-pole inner iron core respectively and matched with each other to form a cylinder to thereby jointly form the radial and axial magnetic circuits of a rotor. According to the invention, the brushless excitation of the hybrid excitation motor is realized, the difficulty of a solid material processing technology is reduced, the motor can be conveniently processed and assembled, and possibility is provided for realizing batch production of the brushless hybridexcitation motor with an axial magnetic circuit.

Description

technical field [0001] The invention relates to a symmetrical rotor structure of a double-ended axial magnetic circuit hybrid excitation motor and an assembly method thereof, belonging to the technical field of axial magnetic circuit synchronous motors. Background technique [0002] The hybrid excitation motor combines the high power density of the permanent magnet synchronous motor and the adjustable air gap magnetic field of the electric excitation motor. In order to realize the brushless of the hybrid excitation motor, the hybrid excitation motor adopts a structure with an axial magnetic circuit and does not require a rotary rectifier , and the output voltage waveform is of high quality. [0003] At present, there are many types of axial hybrid excitation motors in the existing technology, such as hybrid excitation claw pole synchronous motors, whose stator structure is the same as that of ordinary three-phase AC motors, and the rotor is composed of two claw poles, and ea...

AI Technical Summary

Problems solved by technology

[0004] However, in the actual production process, it is difficult to achieve engineering assembly of hybrid excitation motors. The main problem is that the rotor structure is very complex: usually the rotor of the motor has both radial and axial fluxes, so the rotor core usually needs to be integral The shape of the iron core is usually irregular, and it is easy to generate a large amount of magnetic flux leakage, which brings certain difficulties to the processing and assembly of the motor, thus limiting the possibility of mass production

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