Thyristor trigger pulse signal detection circuit

Abstract

This application relates to a thyristor trigger pulse signal detection circuit, which collects the voltage on the primary side winding side of the pulse transformer of the thyristor trigger circuit through a voltage acquisition circuit, and then sends the collected voltage to the pulse processing circuit for analysis, and obtains the voltage at the current voltage Whether the thyristor circuit connected to the thyristor trigger circuit is working normally, that is, whether there is a short circuit or open circuit, so that the staff can take safety protection measures in time. Through the above-mentioned thyristor trigger pulse signal detection circuit, it is not necessary to directly detect the trigger pulse signal on the thyristor, but by detecting the voltage on the primary side winding side of the pulse transformer of the thyristor trigger circuit, it is indirectly obtained whether the thyristor circuit is working normally, that is, the thyristor circuit Whether the trigger pulse is normal, avoiding the problem of directly measuring the consumption of trigger energy and affecting the normal operation of the thyristor circuit.

Description

technical field [0001] The present application relates to the field of detection circuits, in particular to a thyristor trigger pulse signal detection circuit. Background technique [0002] Thyristor (Thyristor) is a thyristor, also known as a silicon controlled rectifier. Because a thyristor can work under high voltage and high current conditions, and its working process can be controlled, it is widely used in controllable rectification, AC In electronic circuits such as voltage regulators, non-contact electronic switches, inverters and frequency converters. In a large-scale excitation system, in order to ensure the power generation safety of the entire system, it is often necessary to set up a corresponding circuit to detect the pulse signal of the thyristor rectifier bridge of the excitation system, so as to take safety protection measures when the pulse is lost or abnormal. [0003] The traditional thyristor trigger pulse signal detection method is to collect the voltag...

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Problems solved by technology

[0004] Based on this, it is necessary to provide a thyristor trigger pulse signal detection circuit for the problem that the traditional thyristor trigger pulse signal detection method will lead to unreliable operation of the thyristor.

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