Bus residual electricity recycling circuit after spark

By designing the residual electricity recycling circuit after spark bus, the rapid reduction of the bus voltage after spark discharge in the electrocutter and the recycling of residual electricity is achieved, which solves the problems of voltage increase and response delay in the prior art, and improves the stability and dust removal effect of the equipment.

CN119696124AActive Publication Date: 2025-03-25DATANG SHAANXI POWER GENERATION CO LTD XIAN THERMAL POWER PLANT
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Patent Information

Application Number
CN202510114835.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-23
Publication Date
2025-03-25
Estimated Expiration
2045-01-23

AI Technical Summary

Technical Problem

The existing electrostatic precipitators have problems such as the increase in bus voltage, untimely consumption and delayed response after spark discharge, which affects the stability of the equipment and the dust removal effect.

Method used

A spark-after bus residual electricity recycling circuit is designed, including residual electricity recycling storage circuit, residual electricity recycling storage control circuit and residual electricity recycling control circuit. By monitoring the bus voltage in real time, dynamically reducing the voltage, the rapid recycling and recycling of residual electricity is achieved.

Benefits of technology

It effectively solves the problem of increased bus voltage after spark discharge, avoids equipment damage and reduced dust removal efficiency, realizes efficient utilization of residual electricity and dynamic stable control of bus voltage, and improves the operating efficiency and reliability of the electrostatic precipitator.

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Abstract

The invention discloses a bus residual electricity recycling circuit after spark discharge, which can effectively solve the problems of bus voltage rise, delayed residual electricity consumption and system response delay after spark discharge in the prior art through efficient recycling, storage and cyclic utilization of bus residual electricity after spark discharge. Firstly, redundant electric energy in a bus filter capacitor C0 is rapidly transferred to a storage capacitor through the redundant electric energy recovery and storage circuit after sparks occur, so that rapid rise of bus voltage caused by continuous power supply of a filter inductor L and reverse charging of an inductive load is avoided; therefore, secondary breakdown, arc discharge and other damages of equipment caused by overvoltage of the bus are prevented, and stable operation of the electric dust remover is ensured. And secondly, the bus voltage is monitored and adjusted in real time through the residual electricity recovery storage control circuit, the residual electricity recovery process is accurately controlled by using a PWM signal, the bus voltage is dynamically reduced to a target range, and equipment operation faults caused by unstable bus voltage are avoided.
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