A Stator Structure of a Centralized Automatic Magnetic Adjustment and Speed ​​Adjustable Motor

Abstract

The invention discloses a stator structure of a centralized automatic magnetism-regulating speed-regulating motor, which includes a stator and a winding. Slip rings that slide with it; three sliding devices with contact pointers are embedded in the groove on the back of the stator, and the positions of the three sliding devices with contact pointers correspond to the three-phase windings of A, B, and C; the sliding device with contact pointers Consists of a pointer with a spherical contact structure, a spring, an induction copper piece and a fixed baffle. When the motor is running, leakage magnetic flux will be generated in the groove of the stator, and the induction copper sheet will generate electromagnetic force under the action of the leakage magnetic flux. When the electromagnetic force is greater than the elastic force generated by the spring, the sliding device will be pushed forward to rotate. When the electromagnetic force is smaller than the spring When the elastic force pushes the sliding device to rotate in reverse, the effective number of turns of the stator winding can be automatically changed according to the change of the magnetic flux, thereby adjusting the magnitude of the magnetic flux.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a stator structure of a centralized automatic magnetic-regulation and speed-regulating motor. 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 of the motor and reduce the overload capacity, so that the motor 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...

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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