Ideal Power Inc.
HVDC/MVDC Systems and Methods with Low-Loss Fully-Bidirectional BJT Circuit Breakers

Abstract:

Methods and systems for HVDC and/or MVDC power transmission and/or distribution, using circuit breakers where a series-connected stack of fully-bidirectional bipolar junction transistors is the initial interrupter in the current path. Preferably these transistors are operated with two pre-turnoff phases, to deplete minority carrier population and thus provide a faster transition to complete turnoff.