Active triggering device matched with trigger vacuum switch

Abstract

The invention discloses an active triggering device matched with a trigger vacuum switch. The active triggering device matched with the trigger vacuum switch comprises an optical signal producing circuit, a thyristor triggering circuit, a pulse generating circuit and an active follow current circuit. The input terminal of the thyristor triggering circuit is connected to the output terminal of the optical signal producing circuit. The thyristor triggering circuit respectively outputs a first pulse signal and a second pulse signal successively. The input terminal of the pulse generating circuit and the input terminal of the active follow current circuit are connected to the output terminal of the thyristor triggering circuit. The output terminal of the pulse generating circuit and the output terminal of the active follow current circuit are used for connecting the input terminal of the trigger vacuum switch. The pulse generating circuit is used for, according to the second pulse signal, outputting a second triggering signal and controlling the trigger vacuum switch to trigger the surface follow current. The trigger voltage is up to 15-20 kV, the trigger current is up to 680 A, and the volume of the trigger device is small.

Description

technical field [0001] The invention belongs to the field of high-power pulse technology, and more specifically relates to an active trigger device used in conjunction with a trigger vacuum switch. Background technique [0002] The trigger vacuum switch is a new type of device that combines vacuum switch technology and three-electrode spark technology, and has been applied in high-power pulse systems. There are two trigger methods for trigger vacuum switches: laser trigger and pulse trigger. The difference is that the former uses laser irradiation to generate initial plasma, and the pulse trigger is to generate initial plasma along the surface through breakdown. For the trigger source that triggers the vacuum switch, its main characteristics are characterized by two quantities: trigger voltage and trigger current. [0003] The following technical problems exist in the work of the trigger vacuum switch: (1) When the trigger vacuum switch is used in the power system, because ...

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Problems solved by technology

[0004] Aiming at the defects of the prior art, the purpose of the present invention is to provide an active trigger device used in conjunction with the trigger vacuum switch, aiming to solve the problem that the trigger vacuum switch cannot be 100% reliable in conduction under positive polarity conditions

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