DocumentCode
2247085
Title
A 20 MVA amplifier for a fusion research experiment
Author
Crookes, R.W ; Subramanian, T.K. ; Ballad, J.P. ; Hay, J.H. ; Edwards, D.C.
Author_Institution
GEC Alsthom Eng. Res. Centre, Stafford, UK
fYear
1994
fDate
26-28 Oct 1994
Firstpage
223
Lastpage
228
Abstract
A four quadrant switching amplifier rated at 20 MVA and with a voltage response time of 25 μs depending on circuit conditions, has been designed, built and tested. Five GTOs are connected in parallel in each arm of a bridge circuit to produce an output capability of ±2 kV and ±10 kA. The purpose of the amplifier is to study the control of plasma current disruptions in a Tokamak fusion experiment and this means it only needs to be rated for short (<100 ms) current pulses. Comprehensive monitoring is provided and seventy signals are monitored at 50 μs intervals
Keywords
Tokamak devices; bridge circuits; fusion reactor instrumentation; power amplifiers; power supplies to apparatus; pulsed power technology; thyristor convertors; 20 MVA; 25 mus; 50 mus; GTOs; Tokamak; bridge circuit; four quadrant switching power amplifier; fusion research experiment; monitoring; plasma current disruptions; voltage response;
fLanguage
English
Publisher
iet
Conference_Titel
Power Electronics and Variable-Speed Drives, 1994. Fifth International Conference on
Conference_Location
London
Type
conf
DOI
10.1049/cp:19940968
Filename
341579
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