An l-type double layer halbach flux switching permanent magnet motor

Abstract

The invention discloses an L-type double-layer Halbach magnetic flux switching permanent magnet motor, which comprises a coaxially installed first rotor, a stator, a second rotor, a first magnetic adjustment ring and a second magnetic adjustment ring. The rotor includes a rotor yoke and a number of permanent magnet units arranged along the circumference on the side of the rotor yoke. Each permanent magnet unit is composed of two L-shaped permanent magnets that are relatively fitted to form a double-layer Halbach structure. One of the L-shaped permanent magnets is radially magnetized , another L-shaped permanent magnet is magnetized tangentially. The magnetic adjusting rings all include a number of Y-shaped magnetic adjusting teeth arranged along the circumference, and the inner ring fixing ring and the outer ring fixing ring formed by connecting the X-shaped fixing brackets end to end. The inner ring fixing ring and the outer ring fixing ring are used to fix the Y-shaped magnetic adjustment teeth.

Description

technical field [0001] The invention relates to an axial magnetic flux switching permanent magnet motor of an L-shaped double-layer Halbach compound array, which is an improvement on the traditional axial magnetic field permanent magnet motor and belongs to the technical field of permanent magnet motors. Background technique [0002] Energy and environmental protection have become the two bottlenecks of sustainable economic development in the 21st century. Vigorously developing new energy electric vehicles is an important direction for realizing energy security, environmental protection and sustainable development of the automobile industry in my country. The drive motor is one of the core components of new energy vehicles, and the axial permanent magnet motor has attracted extensive attention due to its advantages of high torque / power density, excellent heat dissipation performance and compact structure, and it is widely used in electric vehicles with high space constraints....

AI Technical Summary

Problems solved by technology

The disadvantage of this motor is that the rotor Halbach permanent magnet array adopts the traditional single-layer magnetization method, and the combination method is relatively simple.

Moreover, the tooth structure of the magnetic adjustment tooth is relatively simple, which can play the role of magnetic adjustment, but it cannot suppress the cogging torque very well.

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