Redundant Half-tooth Flux Switching Motor

Abstract

The invention discloses a redundant half-tooth-winding magnetic flux switching motor which comprises stator cores, permanent magnets, armature coils, magnet exciting coils, rotor cores and a shaft. The stator cores are provided with fault-tolerant teeth and permanent magnet teeth. Both the integrated armature coils and the integrated magnet exciting coils are wound on the fault-tolerant teeth. The magnet exciting coils can form a second set of armature windings through a power conversion circuit. A rotor is composed of the rotor cores and the shaft. The rotor cores are neither provided with the permanent magnets nor provided with armature windings. The switching motor is simple in structure and suitable for operating at a high speed. The switching motor has the advantages of being high in torque (power) density and high in torque output capacity and reliability. The permanent magnets are neither provided with the armature windings nor provided with exciting windings, and the permanent magnet high-temperature demagnetization caused by heating of the windings can be avoided effectively; the magnet exciting coils can form the second set of armature windings through the conversion circuit, and the fault-tolerant performance of the motor is improved, and various working modes are provided.

Description

technical field [0001] The invention relates to a brushless motor based on the principle of magnetic flux switching, in particular to a redundant half-tooth winding magnetic flux switching motor, which belongs to the technical field of motor manufacturing. Background technique [0002] The traditional stator permanent magnet flux switching motor has the advantages of high torque (power) density, strong torque output capability, and high efficiency. The permanent magnets and centralized armature windings are placed on the stator side, which is easy to cool and dissipate heat. There is no permanent magnet and no armature winding. It has simple structure, high mechanical strength, is suitable for high-speed operation, and can operate under harsh environmental conditions. The armature winding has consistency and complementarity, which can effectively offset the high-order harmonics in the permanent magnet flux linkage and no-load induced electromotive force of each phase, and im...

AI Technical Summary

Problems solved by technology

However, the distribution of two sets of armature windings adopts a radially symmetrical structure. In the working mode of only one set of windings, due to the existence of a unilateral armature magnetic field in the air gap, a large radial magnetic pull will be generated, which will cause a large rotational speed. Torque Ripple and Noise

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