公开(公告)号：US20170170715A1

公开(公告)日：2017-06-15

申请号：US15348553

申请日：2016-11-10

Applicant: ROLLS-ROYCE plc

Inventor： Mohamed HM SATHIK ,  Chandana GAJANAYAKE ,  Sivakumar NADARAJAN ,  Bikramjit S. BHANGU ,  Amit K. GUPTA

IPC: H02M1/32 ,  H02H3/38 ,  H02H7/122 ,  H02M7/537

CPC classification number: H02M1/32 ,  H02H3/38 ,  H02H7/1227 ,  H02M7/537 ,  H02M7/53871

Abstract: A method of controlling an inverter, in which the inverter includes a single-phase inverter arrangement having a complementary pair of power switches, including the steps of: controlling the complementary pair of power switches with a modulating signal to output an AC signal; monitoring a collector-emitter voltage of each of the pair of power switches; if the collector-emitter voltage exceeds a predetermined value, the corresponding one of the pair of power switches is judged to be in a short circuit condition; and if either one of the pair of power switches is judged to be in a short circuit condition, executing a shutdown operation to switch off the corresponding one of the pair of power switches.