A Radially Segmented Modular Switched Flux Disk Motor

Abstract

The invention discloses a radially segmented modular switch magnetic flux disc type motor. The switch magnetic flux disc type motor comprises a rotor structure and a stator structure, wherein the rotor structure comprises a rotor disc and two rotor salient pole groups; the two rotor salient pole groups are staggered at a set angle in the peripheral direction; the stator structure comprises two stator discs which are coaxial and are segmented radially; each stator disc comprises k stator modules; each stator module comprises m stator units and m connecting blocks; each stator unit comprises a permanent magnet, a first stacking section and a second stacking section; stator grooves are formed in the first stacking section and the second stacking section; a winding structure is arranged in each stator groove; each permanent magnet is arranged between the corresponding first stacking section and the corresponding second stacking section; polarities of the two permanent magnets which are opposite in the radial direction in the two stator discs are opposite; and by matching the angle between the two staggered rotor salient pole groups in the peripheral direction and distribution of the polarities of the permanent magnets in the two stator discs, odd harmonic in cogging torque and torque ripple is reduced on the premise of guaranteeing average output torque, and even harmonic in counter electromotive force is weakened.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a radially segmented and modular switched flux disk motor. Background technique [0002] In slotted motors, due to the interaction between permanent magnets and stator cogging, cogging torque is inevitably generated, causing torque fluctuations, bringing vibration and noise. Therefore, in the analysis and design of high-performance permanent magnet motors, the suppression of cogging torque must be highly valued. The main methods for suppressing cogging torque include permanent magnet oblique poles, pole arc coefficient optimization, permanent magnet pole offset, permanent magnet pole pitch adjustment, inclined slots, etc.; for traditional surface-mounted axial permanent magnet motors, changing the permanent magnet structure form is easier to implement. [0003] In recent years, disk permanent magnet motors have attracted more and more attention from researchers due to their comp...

AI Technical Summary

Problems solved by technology

For switched flux disc motors, the use of skewed slots to weaken the cogging torque will undoubtedly increase the manufacturing cost of the motor; by selecting the appropriate permanent magnet structure, the cogging torque can be suppressed to a large extent, but at the same time, the back electromotive force and The average torque will be reduced to a certain extent

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