Novel crowbar circuit for compact 50-kJ capacitor bank

This paper presents a novel crowbar circuit for a 50 kJ capacitor bank. The crowbar circuit consists of a Rogowski coil, a trigger signal generator, and a triggered vacuum switch (crowbar switch). In our crowbar circuit, the Rogowski coil senses the load current and generates trigger signals at the...

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Bibliographic Details
Published in:IEEE transactions on plasma science 2004-04, Vol.32 (2), p.525-530
Main Authors: Yun-Sik Jin, Hong-Sik Lee, Jong-Soo Kim, Young-Bae Kim, Rim, G.-H.
Format: Article
Language:English
Subjects:
Applied sciences
Circuit properties
Circuits
Coils
Electric, optical and optoelectronic circuits
Electrical engineering. Electrical power engineering
Electronic circuits
Electronics
Exact sciences and technology
High voltage or high current generators
High-current and high-voltage technology: power systems
power transmission lines and cables (including superconducting cables)
Oscillators, pulse generators, and function generators
Oscillators, resonators, synthetizers
Plasma
Power supply
Pulse circuits
Pulse power systems
Pulse shaping methods
Semiconductor diodes
Signal generators
Switched capacitor circuits
Switches
Switching circuits
Various equipment and components
Voltage
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Summary:This paper presents a novel crowbar circuit for a 50 kJ capacitor bank. The crowbar circuit consists of a Rogowski coil, a trigger signal generator, and a triggered vacuum switch (crowbar switch). In our crowbar circuit, the Rogowski coil senses the load current and generates trigger signals at the correct time for the crowbar switch operation. At full capacitor charge voltage of 22 kV, it was possible to keep the reverse voltage of the capacitor below 15% of charging voltage. In this paper, we report the features of our crowbar switch system and the electrical performance of the crowbar system.
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2004.826028