Multi-winding motor winding switching device and control method

A technology of motor winding and control method, applied in the direction of AC motor control, control system, electrical components, etc., can solve the problems of large internal resistance, long response time, low price, etc.

Active Publication Date: 2019-03-19
CHONGQING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its advantages are: low price, small internal resistance, large capacity, and strong overload capacity. The disadvantages are: electric control mechanical contact switches have arc ignition, low life, and long response time; electronic switches have large internal resistance and excessive heat generation. , poor overload capacity and other shortcomings

Method used

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  • Multi-winding motor winding switching device and control method
  • Multi-winding motor winding switching device and control method
  • Multi-winding motor winding switching device and control method

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Embodiment Construction

[0032] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0033] see figure 1 , figure 2 and image 3 , figure 1 It is a flowchart of an embodiment of a multi-winding motor winding control method disclosed in the present invention, figure 2 It is a schematic diagram of a multi-winding motor winding control method disclosed in the present invention, image 3 It is a structural schematic diagram of a multi-winding motor winding switching device disclosed in the present invention.

[0034] A winding control method for a multi-winding motor, comprising sequentially performing the following steps:

[0035] S1. Obtain the coincidence point of the T-N winding characteristic curve corresponding to the current running winding and the T-N winding characteristic curve corresponding to the winding to be replaced when the cur...

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Abstract

The invention discloses a multi-winding motor winding switching device and control method, and switching conditions are set based on operating characteristic parameters of each winding itself to avoidoscillation caused by switching at the coincidence point, realize precise control and switching between multiple windings of the motor, realize the effective connection between multiple windings andmake the motor running smoother. Further, a corresponding switching device is disclosed, which solves the problems of reliability and life by the cooperation between the mechanical switch and the electronic switch.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a multi-winding motor winding switching device and a control method. Background technique [0002] In the motor drive system (such as: electric vehicles, machine tools, etc.), it is usually required to provide high torque at low speeds, and to have a wide speed range and system efficiency at high speeds; but due to the inherent characteristics of the motor, It is difficult to take into account the high torque output under heavy load and the high speed operation under light load, so the actual application system is often realized by multi-winding motor. [0003] Existing multi-winding motors mostly use manual switching, and the operator switches windings according to the speed, which cannot accurately control the switching position, resulting in speed fluctuations and shocks. Generally, switching is performed at the coincidence point of the T-N characteristic curves corresp...

Claims

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Application Information

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IPC IPC(8): H02P25/22
CPCH02P25/22
Inventor 徐世军
Owner CHONGQING UNIV OF TECH
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