Building block type stator disc, permanent magnet motor and speed control method thereof

Abstract

The invention relates to a building block type stator disc, a permanent magnet motor and a speed control method thereof; the building block type stator disc comprises a plurality of stator teeth, a winding which is wound on each stator tooth in the direction parallel to the rotor disc direction, an inner fixed ring frame and an outer fixed ring frame, wherein the inner fixed ring frame and the outer fixed ring frame are arranged in a sleeved mode inside and outside; the plurality of stator teeth are arranged between the inner fixed ring frame and the outer fixed ring frame and are encircled toform an annular shape; and one end of the stator tooth is fixedly connected to the inner fixed ring frame through a first connecting piece, and the other end of the stator tooth is fixedly connectedto the outer fixed ring frame through a second connecting piece. The building block type stator disc is simple in structure and convenient to control, does not need to be converted into a rotary magnetic field, and is different from a traditional control mode of a permanent magnet motor, the motor can be rotated only by continuously changing the coils on different magnetic poles, the cost is low,and the maintenance is convenient.

Description

technical field [0001] The invention relates to a building block type stator plate, a permanent magnet motor and a speed control method thereof, belonging to the field of permanent magnet motors. Background technique [0002] Compared with the electric excitation motor, the permanent magnet motor has the advantages of simple structure, reliable operation, small size, light weight, low loss, high efficiency, flexible shape and size of the motor, etc., so the application range is extremely wide, almost all over the world Aerospace, defense, and various fields of daily life such as power generation, elevators, and electric vehicles. [0003] The driving principle of the existing permanent magnet motors is that after the winding on the stator disk is connected to a three-phase symmetrical alternating current, a rotating magnetic field will be generated, and the rotating magnetic field will drive the rotor disk to rotate. For example, the permanent magnet stack described in the p...

AI Technical Summary

Problems solved by technology

It is necessary to convert the DC power into the required three-phase AC power, and then drive the motor to run, the cost is relatively high

Moreover, the number of coils wound on each stator tooth of the stator disk is limited, and the material is not well utilized to wind more coils, and the magnetic flux is low, which affects the working efficiency of the motor

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