L-shaped double-layer Halbach magnetic flux switching permanent magnet motor

Abstract

The invention discloses an L-shaped double-layer Halbach magnetic flux switching permanent magnet motor. The L-shaped double-layer Halbach magnetic flux switching permanent magnet motor comprises a first rotor, a stator, a second rotor, a first adjustable flux ring and a second adjustable flux ring which are coaxially installed. Each rotor includes a rotor yoke and a plurality of permanent magnetunits arranged along the circumference of the side surface of the rotor yoke. Each of the permanent magnet units is of a double-layer Halbach structure formed by mutual embedding of two L-shaped permanent magnets. One of every two L-shaped permanent magnets is radially magnetized, and the other one of every two L-shaped permanent magnets is tangentially magnetized. Each adjustable flux ring includes a plurality of Y-shaped adjustable flux teeth arranged along the circumference, an inner ring fixing ring and an outer ring fixing ring, wherein each inner ring fixing ring and each outer ring fixing ring are separately formed by connecting X-shaped fixing brackets end to end. The inner ring fixing rings and the outer ring fixing rings are used for fixing the Y-shaped adjustable flux 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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