High-frequency current source device for thyristor electromagnetic trigger with state monitoring function

Abstract

The invention discloses a high-frequency current source device with a state monitoring function for electromagnetically triggering thyristors. The high-frequency current source device comprises a high-frequency current source generating module and a current source state monitoring module. the high-frequency current source generating module is used for generating and outputting high-frequency current sources according to control signals, the current source state monitoring module is connected with an output end of the high-frequency current source generating module and comprises a current amplitude detecting unit and a state outputting unit, the current amplitude detecting unit is connected with the state outputting unit, the high-frequency current sources outputted by the high-frequency current source generating unit can be acquired by the current amplitude detecting unit in real time, amplitude of the high-frequency current sources can be detected, and amplitude detection results can be outputted; the amplitude detection results can be transmitted by the state outputting unit, and states of the high-frequency current sources can be outputted according to the amplitude detection results. The high-frequency current source device has the advantages that the states of the current sources can be monitored in real time while the high-frequency current sources are generated, and the high-frequency current source device is simple in structure, low in required cost, flexible in application and excellent in safety performance.

Description

Technical field [0001] The invention relates to the technical field of thyristor electromagnetic triggering, in particular to a high-frequency current source device for thyristor electromagnetic triggering with a monitoring function. Background technique [0002] With the rapid development of industry, the application of semi-controlled device thyristors in the field of industrial conversion is very common. At present, the triggering methods of thyristors are mainly divided into electromagnetic triggering and photoelectric triggering. Because the electromagnetic triggering method has the advantages of high reliability, low cost, and small size, it is widely used in converter systems of 10kV and below. At present, the electromagnetic trigger system of the thyristor is mainly composed of a high-frequency current source trigger unit on the low-voltage side and a coupling unit on the high-voltage side. The function of the high-frequency current source trigger unit is to generate a fi...

AI Technical Summary

Problems solved by technology

However, since the control system cannot know the working state of the high-frequency current source during the generation process of the high-frequency current source, individual thyristors or the entire group of thyristors are not turned on and withstand excessive high voltage, which can easily lead to breakdown of the thyristors. As a result, there will be a safety hazard to the thyristor work of the entire system

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