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Single-pole switch break-time feedback self-tuning control method

A self-correcting control and breaking time technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problems of low test efficiency, poor accuracy, manual adjustment of test parameters, etc., and achieve good transient response capability , Improve stability and achieve the effect of zero current breaking

Active Publication Date: 2018-06-01
FUZHOU UNIV
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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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  • Single-pole switch break-time feedback self-tuning control method
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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 present invention relates to a single-pole switch break-time feedback self-tuning control method. The method comprises the steps of: establishing a contact feedback loop based on break arc voltageMallat conversion, performing multi-resolution analysis of an arc voltage at a moment of contact arcing, and automatically identifying a moment of just breaking of the contact. Online automatic regulation of the single-pole switch break-time moment is achieved, after parameters such as spring fatigue and contact wearing are changed, a stable breaking moment in a current condition is automaticallysearched, zero current breaking is achieved, and therefore, the single-pole switch break-time feedback self-tuning control method has more practical application for batch control, changes the defectthat a traditional method needs to measure break time of contacts on a large scale in advance and has the versatility.

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 Applications(China)
IPC IPC(8): G05B13/04
CPCG05B13/042G05B13/048
Inventor 许志红王阳
Owner FUZHOU UNIV
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