9/8-pole switched reluctance motor

Abstract

The invention discloses a 9 / 8-pole switched reluctance motor. The motor has a stator tooth quantity of 9, a rotor tooth quantity of 8 and a phase quantity of 3; stator teeth comprise 3 wide teeth and6 narrow teeth; 1 coil is wound on each stator teeth; the motor is of a 120-degree phase structure with a winding; each phase comprises 3 stator teeth which are adjacently distributed, wherein the wide teeth is located between the two narrow teeth; coils on the 3 adjacent stator teeth are connected to a one-phase winding; a distance angle of each phase of the wide tooth and the two narrow teeth is45 degrees and the three phases are uniformly distributed in space; a difference between the phases is 120 degrees; each phase of magnetic path is distributed as a short magnetic path, the loss of aniron core is small and the coupling between the phases is weak. Compared with a traditional three-phase 12 / 8-pole switched reluctance motor, the motor has the advantages that an effective output range of a torque of the motor is large, the starting capability is relatively strong and the pulse of the torque is small; each phase of magnetic flux is of a short magnetic path structure and the loss of the iron core of the motor is easy to reduce; the coupling between the phases is weak and the reliability of the motor is easy to improve.

Description

technical field [0001] The invention relates to a 9 / 8-pole switched reluctance motor, which belongs to the technical field of switched reluctance motors. Background technique [0002] The stator and rotor of the switched reluctance motor are double-salient pole structures, and the rotor has no windings and permanent magnets. It has the characteristics of simple and firm structure, low cost, high temperature resistance and high-speed adaptability. It is widely used in civilian fields. [0003] Commonly used switched reluctance motors are usually three-phase or four-phase, and the motor with more phases has better torque characteristics, stronger torque ripple and starting ability; however, more phases will inevitably lead to higher cost of the control system, so Three-phase switched reluctance motors are more commonly used. The switched reluctance motor with more stator and rotor poles has better torque characteristics and starting ability, but the switching frequency is hi...

AI Technical Summary

Problems solved by technology

[0004] However, the torque ripple and core loss of the three-phase 12 / 8-pole switched reluctance motor are still relatively large, and the starting ability still needs to be further improved. In order to solve this problem, the present invention proposes a low torque ripple, strong starting ability and A new three-phase 9 / 8-pole switched reluctance motor with low core loss

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