APPARATUS AND METHOD FOR SIMULTANEOUSLY DEACTIVATING SERIES-CONNECTED SWITCHING DEVICES

摘要

An apparatus for use in the simultaneous deactivation of a set of series-connected switching devices includes gate command control logic (32) to generate a gate command signal for application to a selected switching device of the set of series-connected switching devices (22A-22N). A command compensation circuit includes (42A) a time differential measurement module that forms a time includes (42A) a time differential measurement module that forms a time differential signal indicative of the time from the previous turn-off of the selected switching device and the previous turn-off of the last switching device in the set of series-connected switching devices. A time difference processing module of the command compensation circuit processes the time differential signal and creates a delay signal. A delay module of the command compensation circuit delays the gate command signal in response to the delay signal.