Hybrid excitation block type stator and rotor switch reluctance machine

Abstract

The invention discloses a hybrid excitation block type stator and rotor switch reluctance machine which belongs to the field of switch reluctance machines. The hybrid excitation block type stator and rotor switch reluctance machine comprises a block type stator, stator windings, a magnetism isolating plate, a permanent magnet, a block type rotor and a rotor metal sleeve, wherein a rotating shaft penetrates through the metal sleeve, the block type rotor is formed from fan-shaped block-shaped rotor tooth blocks, the fan-shaped block-shaped rotor tooth blocks are embedded into the rotor metal sleeve without magnetic conductivity, the block type stator is formed from C-shaped stator tooth blocks, and each stator winding is embedded into a groove of the two opposite stator tooth blocks. The block type stator and rotor are convenient for module production; alternate magnetic fields are not coupled, and the fault tolerance performance of the reluctance machine is strong; and the permanent magnet is magnetized in parallel, torque is generated only when an electric exciting winding is electrified, and the reluctance machine has large output power, high power density and convenient control through hybrid excitation and has the same power circuit and control strategy with an ordinary switch reluctance machine.

Description

technical field [0001] The invention relates to a hybrid excitation segmented stator and rotor switched reluctance motor, which belongs to the field of switched reluctance motors. Background technique [0002] The switched reluctance motor has the advantages of simple structure, firmness, low cost, reliable performance, flexible control, strong fault tolerance, and high temperature and high speed adaptability. However, the concave-convex structure of the rotor of the switched reluctance motor makes the wind resistance during high-speed operation very large, and the resistance during high-speed operation under oil cooling conditions is even greater. Injection plastic is filled, but the manufacturing process is complicated and the cost is high. And the switched reluctance motor is a half-cycle output, how to further improve the motor efficiency and power density on the existing basis is also an important research direction of the switched reluctance motor speed control system...

AI Technical Summary

Problems solved by technology

Both have special requirements for the direction of the permanent magnet magnetic field, so only some switched reluctance motors with a specific number of stator teeth can meet this requirement, and the permanent magnet magnetic field lines interlink the non-conductive winding, which will generate an induced electromotive force in the non-conductive winding, affect motor performance

The above disadvantages affect the further application of hybrid excitation switched reluctance motors of these two structures

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