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Development of large-capacity VBO-free light-triggered thyristors and their application to SVC valves

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5 Author(s)

Six kV 2500 A and 1500 A light-triggered thyristors with an overvoltage protection function or VBO-free LTT thyristors were developed. Using these thyristors, 100 MVA-class SVC valves were manufactured and subjected to one year of field testing. Features, structures and electrical characteristics of the developed large-capacity VBO-free LTTs are described. Specifications and construction of the SVC valve used in the field verification tests are introduced and field test results are given

Published in:

Power Electronics Specialists Conference, 1991. PESC '91 Record., 22nd Annual IEEE

Date of Conference:

24-27 Jun 1991