Power converter

Details Power converter Power converter

H - Electricity

01

T

323/10

H01T 1/14 (2006.01) H01T 4/10 (2006.01) H02G 9/06 (2006.01) H02H 7/00 (2006.01)

Patent

CA 1200281

ABSTRACT OF THE DISCLOSURE A power converter adapted for use in a high-voltage circuit and equipped with a plurality of arms each comprising a plurality of thyristor elements connected in series, wherein an overvoltage limiter having an overvoltage limiting element and means for short- circuiting the ends of the overvoltage limiting element in response to flow of a load current therein are connected between the anode and the cathode of each thyristor element. The short-circuiting means has a gap between the two electrodes connected respectively to the anode and the cathode of each thyristor element, and also a metal layer of a low melting point which is molten by heat generated due to the flow of a load current in the overvoltage limiting element to fill the gap.

432236

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