High-voltage and high-power test system for converter valve energy extraction power supply

By using an adjustable AC isolation regulated power supply and a multi-voltage rectifier and filter circuit, combined with a relay group and a residual voltage discharge circuit, the problem of traditional test systems being unable to cope with current surges is solved, enabling flexible adjustment and safe testing of the high-voltage, high-power power supply for converter valves.

CN224536148UActive Publication Date: 2026-07-21SHANGHAI L&L ELECTRONICS TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI L&L ELECTRONICS TECH CO LTD
Filing Date
2025-08-07
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Traditional testing systems are unable to simulate the wide range of voltage fluctuations and current surges faced by the high-voltage, high-power power supply of the converter valve under actual operating conditions, and therefore cannot guarantee its stable operation.

Method used

It employs an adjustable AC isolated regulated power supply, a multi-voltage rectifier and filter circuit, measurement components, and a host computer. Through adjustable power frequency AC voltage and a multi-voltage rectifier and filter circuit, combined with relay groups and residual voltage discharge circuits, it can cope with current surges and safely release them.

Benefits of technology

It enables flexible adjustment and multi-channel output of the high-voltage, high-power power supply for the converter valve, enhancing the adaptability and safety of the testing system and ensuring the stable operation of the converter valve.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to a high-voltage and high-power test system for a converter valve power supply, which comprises an adjustable AC isolation voltage stabilizer, a multiple voltage rectification filter circuit, a measured high-voltage power supply, a measurement assembly and an upper computer, the adjustable AC isolation voltage stabilizer is used for providing adjustable power frequency AC voltage, the input end of the multiple voltage rectification filter circuit is electrically connected with the adjustable AC isolation voltage stabilizer, the multiple voltage rectification filter circuit is used for converting AC voltage into DC high voltage with different multiples, the input end of the measured high-voltage power supply is electrically connected with the output end of the multiple voltage rectification filter circuit, the measured high-voltage power supply has multiple outputs, the input end of the measurement assembly is electrically connected with the measured high-voltage power supply, the measurement assembly is used for collecting multiple output voltages, the upper computer is electrically connected with the measurement assembly and the adjustable AC isolation voltage stabilizer respectively, the upper computer is used for adjusting input voltage and collecting test data, and the multiple voltage rectification filter circuit uses multiple 450V / 560uF parallel capacitors, so that the required current impact can be coped with.
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