Rotor magnetism-regulating type flux switching motor

Abstract

The invention discloses a rotor magnetism-regulating type flux switching motor, comprising a stator and a rotor, wherein the stator and the rotator respectively have a salient pole structure; the rotor comprises rotor magnetic pole modules (1), magnetism isolating blocks (4), magnetism regulating blocks (5) and a shaft (6); each rotor magnetic pole module (1) comprises two rotor teeth (2) and a permanent magnet (3), wherein the permanent magnet (3) is embedded between the two rotor teeth (2); the permanent magnets (3) are capable of magnetizing along the tangential direction, and the magnetizing directions of the every two adjacent permanent magnets (3) are the same as each other; each magnetism isolating block (4) is embedded between the every two adjacent rotor magnetic pole modules (1). The rotor magnetism-regulating type flux switching motor has the advantages of being high in power density, strong in torque output capability and adjustable in magnetic field, has multiple magnetism-regulating working modes, and effectively expands the working range and operating characteristic of the motor.

Description

technical field [0001] The invention relates to a brushless motor based on the magnetic flux switching principle and the magnetic field adjustment mechanism, in particular to a rotor magnetic flux switching motor, which belongs to the technical field of motor manufacturing. Background technique [0002] The permanent magnets and armature windings of traditional stator permanent magnet flux switching motors are placed on the stator side, and the rotor is only composed of iron cores. It has a simple structure and high mechanical strength, and is suitable for high-speed operation and harsh environments. The motor has the advantages of high torque (power) density, low loss, etc., and the single-phase permanent magnet flux linkage and no-load induced potential harmonic content are low, effectively suppressing torque ripple. [0003] However, in the application fields of wind power generation, new energy electric vehicles, industrial drives, multi-electric aircraft / ships, etc., no...

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Problems solved by technology

[0006] However, the document CN104201852A proposes a rotor permanent magnet flux switching motor with complementary windings, which has the following disadvantages: a single permanent magnet is used for excitation, and the permanent magnetic field cannot be adjusted, thereby affecting the field-weakening speed regulation range of the motor; Hybrid excitation flux switching motor adopts a hybrid excitation structure, and a brush slip ring needs to be added on the rotor side to provide DC excitation current, while the brush slip ring has a complex structure and requires regular maintenance

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