Full-digital constant-temperature water-cooling control system for high-pressure high-capacity IEGT (Injection Enhanced Gate Transistor) converter

Abstract

The invention relates to a full-digital constant-temperature water-cooling control system for a high-pressure high-capacity IEGT (Injection Enhanced Gate Transistor) converter. The full-digital constant-temperature water-cooling control system mainly comprises a liquid storage tank, an IEGT converter water-cooling system, a water pump, a cooling water circulating system, a temperature transmitter and a constant-temperature cooling control cabinet, wherein the IEGT converter water-cooling system is arranged in the IEGT converter; the water pump is used for driving the cooling water in the IEGT converter water-cooling system to circulate; the cooling water circulating system is composed of a motor of the water pump; the temperature transmitter is arranged at a water outlet pipe of the IEGT converter water-cooling system and is used for detecting the temperature of the cooling water in the water outlet pipe of the IEGT converter water-cooling system and outputting a temperature signal to the constant-temperature cooling control cabinet; and the constant-temperature cooling control cabinet is used for outputting a rotating speed control signal to the motor of the water pump according to the received temperature signal so as to adjust the rotating speed and control the flow of the cooling water in the cooling water circulating system. The full-digital constant-temperature water-cooling control system for the high-pressure high-capacity IEGT converter controls the rotating speed of the motor of the water pump according to the temperature of the cooling water flowing out of the converter so as to control the flow of the cooling water; the converter works at constant temperature; the backflow of the cooling liquid is avoided; and the energy resource is obviously saved.

Description

technical field [0001] The invention belongs to the field of water cooling of high-voltage and large-capacity converters, and in particular relates to an all-digital constant-temperature water-cooling control system for high-voltage and large-capacity IEGT converters. Background technique [0002] Social progress has promoted the rapid development of the power industry, and high-voltage and large-capacity power electronic equipment has also developed accordingly. In high-voltage and large-capacity power electronic equipment, high-voltage and large-capacity converters are essential core devices. The traditional IGBT high-voltage large-capacity converter technology has matured, while the IEGT high-voltage large-capacity converter has just started. [0003] The converter will generate energy consumption during operation, and these losses will be converted into heat inside the converter. If the heat is not dissipated in time, it will affect the performance of the converter or...

AI Technical Summary

Problems solved by technology

In this way, the capacity of the water pump and its motor driving the cooling water cycle is relatively large, and the cooling water flow rate is always large, resulting in waste of power consumption

[0005] In addition, in the prior art, the temperature and pressure transmitters often use analog detection or control, which has low detection accuracy and is susceptible to interference

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