Axial-radial hybrid flux permanent magnet machine

Abstract

The invention provides an axial-radial hybrid flux permanent magnet machine, belonging to the field of permanent magnet machines. The permanent magnet machine includes a stator, a rotor, and a shaft, the stator is fixed on the shaft through fixed connection, the rotor is arranged at the outer side of the stator, the rotor and the shaft are in rotation connection through a bearing, the stator core is formed by the uniform circular arrangement of a plurality stator core modules along the shaft, each stator core module is provided with a radial tooth and two axial teeth and is provided with a stator winding, a plurality of radial permanent magnets are uniformly distributed on the inner circular wall surface of the rotor and are uniformly surrounding the shaft, and the inner surface of the end faces of the two sides of the rotor are uniformly provided with a plurality of axial permanent magnets in a radial manner. The axial-radial hybrid flux permanent magnet machine can effectively solve the problems that a permanent magnet machine in the prior art is small in space availability, non-compact in motor structure, difficult in machining and assembling, and cannot effectively improve the torque density and power density.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to an axial-radial mixed flux permanent magnet motor. Background technique [0002] At present, the commonly used permanent magnet motors can be divided into two categories: axial flux and radial flux permanent magnet motors, and their ends are difficult to use, the effective utilization of the entire space of the motor is low, the structure of the motor is not compact, and the motor is still There is room to increase torque density and power density. [0003] In the traditional design, the size of the motor is optimized. For example, the radial permanent magnet motor adopts a structure with a large length-to-diameter ratio, and the axial permanent magnet motor adopts a structure with a small length-to-diameter ratio; technical measures such as fractional concentrated windings are used to Improve the torque density of the motor, but its improvement is limited, and it is difficult to...

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Problems solved by technology

[0002] At present, the commonly used permanent magnet motors can be divided into two categories: axial flux and radial flux permanent magnet motors, and their ends are difficult to use, the effective utilization of the entire space of the motor is low, the structure of the motor is not compact, and the motor is still Room for improved torque density and power density

[0003] In the traditional design, the size of the motor is optimized. For example, the radial permanent magnet motor adopts a structure with a large length-to-diameter ratio, and the axial permanent magnet motor adopts a structure with a small length-to-diameter ratio; technical measures such as fractional concentrated windings are used to Improve the torque density of the motor, but its improvement is limited, and it is difficult to use the end of the motor winding. Here, people seek a more compact structure, combining the topology of the axial flux and radial flux permanent magnet motor and Performance characteristics, two axial flux permanent magnet motors and one radial flux permanent magnet motor are combined into a hybrid flux permanent magnet motor, which makes full use of the idle space of the motor, has a more compact structure, and effectively improves the motor performance. power and torque density, however, the axial and radial magnetic fluxes in the stator core of the proposed structure are independent of each other. Use soft magnetic composite materials or steel with good magnetic permeability, and its processing technology is complicated, and the torque density is not high

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