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SUPPRESSION OF CHARGE PUMP VOLTAGE DURING SWITCHING IN A MATRIX CONVERTER

United States Patent Application

20130170267
A1
View the Complete Application at the US Patent & Trademark Office
Switches of a matrix converter are protected from potentially damaging charge-pump voltage build-up during a transition (dead) time by pulsing On (temporarily closing) any "at risk" switch during the transition (dead) time. The temporary closing of the "at risk" switch discharges any voltage build-up across a parallel coupled capacitor, which protects the at risk switch from damage or failure.
KAJOUKE, LATEEF A. (SAN PEDRO, CA), PETERSON, TED D. (PLAYA DEL REY, CA), RANSOM, RAY M. (BIG BEAR CITY, CA)
GM GLOBAL TECHNOLOGY OPERATIONS LLC (Detroit MI)
13/ 712,801
December 12, 2012
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0002] This invention was made with United States Government support under Contract number DE-FC26-07NT43123, awarded by the United States Department of Energy. The United States Government has certain rights in this invention.