NDLI: A high current, high dI/dt, light activated thyristor

Content Provider	IEEE Xplore Digital Library
Author	Giorgi, D.M. Long, J.R. Crosley, D.M. Navapanich, T.
Copyright Year	2004
Description	Author affiliation: OptiSwitch Technol. Corp., San Diego, CA, USA (Giorgi, D.M.; Long, J.R.; Crosley, D.M.; Navapanich, T.)
Abstract	Solid-state switches are necessary for pulsed power systems which require long life, high reliability and high repeatability. However, state-of-the-art electrically gated thyristors cannot achieve the dI/dt rating necessary for the most advanced pulsed power systems. Optical activation of the thyristor can be utilized to drastically increase the dI/dt rating and thus the area of the switch is determined only by the temperature rise. The authors present experimental results of a novel optical activation technique which can be used to efficiently couple light into a large area thyristor. Using this technique, a single 6 kV, 77 mm thyristor conducted 111 kA with a 10-90% rise-time of 1.3 /spl mu/s and a pulse width of /spl sim/6 /spl mu/s. The circuit limited dI/dt was 85 kA//spl mu/s. In addition, two switches were operated in series to hold-off 12 kV and, when activated, conducted 108 kA with a 1.3 /spl mu/s risetime and a pulse width of /spl sim/6 /spl mu/s.
Starting Page	186
Ending Page	190
File Size	819939
Page Count	5
File Format	PDF
ISBN	0780382900
DOI	10.1109/ELT.2004.1398071
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-05-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Space vector pulse width modulation Thyristors Temperature Optical switches Coupling circuits Pulse power systems Optical coupling Power system reliability Solid state circuits Optical pulses
Content Type	Text
Resource Type	Article

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