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A Self-Correcting Control Method of Single-pole Switch Breaking Time Feedback

A breaking time, single-pole switching technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problems of poor accuracy, low test efficiency, manual adjustment of test parameters, etc., to achieve real-time accurate feedback, good Transient response capability, achieving the effect of zero current breaking

Active Publication Date: 2021-01-29
FUZHOU UNIV
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Most of the existing breaking time measurement methods use DC voltage at the fracture and manually adjust the test parameters, which has low test efficiency and poor accuracy.

Method used

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  • A Self-Correcting Control Method of Single-pole Switch Breaking Time Feedback
  • A Self-Correcting Control Method of Single-pole Switch Breaking Time Feedback

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Embodiment Construction

[0021] The technical method of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0022] A unipolar switch breaking time feedback self-correction control method of the present invention provides an electromagnetic system and a contact system connected to each other; the contact system includes a contact voltage and current detection module, and the current detection module realizes the control of the main contact current Zero-point detection, in cooperation with the closed-loop control of the electromagnetic mechanism closed-loop control system to complete the zero-current opening operation, is characterized in that: the method establishes a contact feedback loop based on the Mallat transformation of the breaking arc voltage, and analyzes the contactors that will be detected in the characteristic frequency band of the arc voltage. Just after the minute is divided, and the historical breaking action time of the unipolar sw...

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Abstract

The invention relates to a single-pole switch breaking time feedback self-correction control method. Establish a contact feedback loop based on the Mallat transformation of the breaking arc voltage, conduct multi-resolution analysis of the arc voltage at the moment of contact arcing, automatically identify the moment when the contact just breaks, and realize the online automatic adjustment of the breaking time of the unipolar switch. After fatigue, contact wear and other parameters change, it can automatically find the stable breaking time under the current working conditions, realize zero current breaking, and have more practical significance for batch control, changing the disadvantages of traditional methods that need to measure the breaking time of large batches of contactors in advance , the control method is universal.

Description

technical field [0001] The invention relates to the field of electromagnetic switches, in particular to an adaptive control method for a zero-current breaking switch. Background technique [0002] During the breaking process of the AC electromagnetic switch, the switching arc seriously affects its reliable operation. As a control appliance, AC electromagnetic switches usually do not adopt such strong arc extinguishing measures as power distribution appliances, so the ablation of contacts is very serious when breaking large currents. With the development of new energy sources such as wind energy and photovoltaics and the substantial increase in the manufacturing capacity of mining, lifting and other industries, the requirements for the capacity, breaking capacity and application fields of switches are getting higher and higher, and the research of new switching appliances has received extensive attention. . [0003] The application of arc-free or micro-arc intelligent contr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/042G05B13/048
Inventor 许志红王阳
Owner FUZHOU UNIV
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