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

Abstract

The present invention proposes a symmetrical rotor structure of a double-ended axial magnetic circuit hybrid excitation motor. The structure includes a rotating shaft, an N-pole outer core, an S-pole outer core, an N-pole inner core, an S-pole inner core, a right excitation winding, Right excitation support, left excitation winding, left excitation support; the overall structure of the rotor is center-symmetrical to the center of the rotating shaft. Correspondingly installed on the outside of the N-pole inner iron core and the S-pole inner iron core respectively, and cooperate with each other to form a cylindrical shape, and jointly constitute the radial and axial magnetic circuits of the rotor. The invention realizes the brushless excitation of the hybrid excitation motor, reduces the difficulty of solid material processing technology, can process and assemble the motor conveniently, and provides the possibility for mass production of the brushless hybrid excitation motor with axial magnetic circuit sex.

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...

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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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