Rotor Permanent Magnet Flux Switching Motor with Magnetic Field Adjustment Capability

Abstract

The invention discloses a rotor permanent magnetic flux switching motor having magnetic field adjusting capability. The rotor permanent magnetic flux switching motor having magnetic field adjusting capability comprises a stator and a rotor, wherein the stator and the rotor are respectively a salient pole structure, an air gap is between the stator and the rotor, the rotor comprises rotor magnetic pole modules (1), a magnetic isolation block (4), a magnetic adjusting block (5) and a shaft (6), the rotor magnetic pole modules (1) respectively comprise two rotor teeth (2) and one permanent magnet (3), the permanent magnet (3) is embedded between the two rotor teeth (2), the permanent magnet (3) realizes tangential magnetizing, magnetizing directions are consistent, and the magnetic isolation block (4) is embedded between the adjacent rotor magnetic pole modules (1). The rotor permanent magnetic flux switching motor has advantages of high power density, strong torque output capability and adjustable magnetic field, and a motor work scope is effectively widened.

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 permanent magnet magnetic flux switching motor with magnetic field adjustment capability, which belongs to the technical field of motor manufacturing. Background technique [0002] The permanent magnet and armature winding of the traditional stator permanent magnet flux switching motor are placed on the stator side, and the rotor is only composed of an iron core. It has a simple structure, high mechanical strength, and is suitable for high speed 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, industria...

AI Technical Summary

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

Images