Switched reluctance motor with bipolar excitation 8/6 structure sectional rotor

Abstract

The invention discloses a switched reluctance motor with a bipolar excitation 8 / 6 structure sectional rotor, which belongs to the field of switched reluctance motors. The switched reluctance motor comprises a radial stator, stator windings, sectional rotor iron core blocks and a nonmagnetic rotor sleeve, wherein six sectional rotor iron core blocks are embedded in the nonmagnetic rotor sleeve to form a cylindrical rotor; the radial stator has a structure with eight teeth and eight grooves; the stator windings in two opposite grooves form a solenoid, each solenoid is a phase winding respectively, the number of the phase windings is four, and each phase winding is connected through a bipolar excitation four-phase H bridge topological circuit and is electrified during the period when the self inductance of each phase winding rises so that one working period of the motor is a 120-degree rotor position angle. The switched reluctance motor has the advantages of small wind (oil) resistance at high speed, low loss of iron cores and simple structure, and an excitation topology of the motor adopts a modularized H bridge circuit to save the cost.

Description

technical field [0001] The invention relates to a bipolar excitation 8 / 6 segmented rotor switched reluctance motor, which belongs to the field of switched reluctance motors. Background technique [0002] There are many structural forms of switched reluctance motors, but there are mainly three commonly used structural forms, namely 6 / 4 structure, 8 / 6 structure and 12 / 8 structure. [0003] The switched reluctance motor has the advantages of simple structure, firmness, low cost, reliable operation, flexible control, strong fault tolerance, and high temperature and high speed adaptability. However, the rotor of the salient pole structure of the switched reluctance motor makes the wind resistance at high speed operation large, and the resistance at high speed operation under oil cooling conditions is even greater. In order to reduce the wind (oil) resistance, the rotor slot wedge can be added or filled in the rotor. Although the effect of reducing wind (oil) resistance is obviou...

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Problems solved by technology

However, for the four-phase segmented rotor switched reluctance motor with 8 / 6 structure, due to the magnetic circuit characteristics of the segmented rotor switched reluctance motor with 8 / 6 structure, if an asymmetrical half-bridge unipolar excitation topology circuit is used, it will It cannot work normally, so there is no research report on the four-phase segmented rotor switched reluctance motor with 8 / 6 structure

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