Novel discrete automatic magnetism-adjusting and speed-adjusting motor stator structure

Abstract

The invention discloses a novel discrete automatic magnetism-adjusting and speed-adjusting motor stator structure, which comprises a stator, a winding, fixed baffle plates and rotating devices with contact pointers; the rotating devices with the contact pointers are respectively arranged in the stator slots of the phases A, B and C, and the fixed baffle plates are respectively arranged in the corresponding stator slots; each rotating device with the contact pointer comprises a pointer with a spherical contact structure, an induction copper sheet, a spring and a rotating shaft, and the rotating shaft is rotationally connected to each fixed baffle plate; each induction copper sheet is fixed on the rotating shaft; one end of the pointer is connected to the rotating shaft, the pointer is parallel to the stator end face, and the other end of the pointer is of a spherical contact structure and makes contact with the winding. When the motor does not run, the spring does not deform and has no elasticity; when the motor operates, the induction copper sheets can generate electromagnetic forces, when the electromagnetic forces are larger than elastic forces, the rotating shafts drives the pointers to swing clockwise, and when the electromagnetic forces are smaller than the elastic forces, the rotating shafts drive the pointers to swing anticlockwise, so that effective turns of the winding are automatically changed, and magnetic flux is adjusted.

Description

technical field [0001] The invention relates to the technical field of electric motors, in particular to a novel discrete automatic magnetic-adjustable-speed electric motor stator structure. Background technique [0002] The speed regulation of the motor has always been the key technology of the motor. Among the many speed regulation methods, frequency conversion speed regulation is mostly used. For asynchronous motors, most of them use frequency conversion speed regulation. Under constant power speed regulation, the increase of motor speed will cause the motor air gap magnetic field to decrease, which will reduce the output torque and overload capacity of the motor, and cannot continue to run at a higher speed. [0003] The invention of the notification number CN104979991B discloses a torque-adaptive continuous variable speed permanent magnet inner rotor brushless motor, including a motor shaft, a rotor, a stator, a casing, an end cover and the like. It is characterized i...

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned technical solutions disclose some schemes for magnetic regulation and speed regulation, but none of them can achieve the effect of "continuous adjustment range, smooth speed regulation, and short adjustment time".

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