Title :
A soft switching active snubber optimized for IGBTs in single switch unity power factor three-phase diode rectifiers
Author :
Chen, Keming ; Elasser, Ahmed ; Torrey, David A.
Author_Institution :
REM Technologies, Schenectady, NY, USA
Abstract :
The soft switching snubber circuit provides zero-voltage turn-off for the main switch. The high turn-off losses of the IGBT due to the current tailing are reduced by zero-voltage switching. This allows the circuit to be operated at very high switching frequencies with regulated DC output voltage, high quality input current and unity input power factor. Simulation and experimental results are included
Keywords :
insulated gate bipolar transistors; overvoltage protection; power factor; rectifying circuits; semiconductor switches; solid-state rectifiers; switching circuits; IGBT; current tailing; high quality input current; high turn-off losses; regulated DC output voltage; single switch; soft switching active snubber; three-phase diode rectifiers; unity power factor; very high switching frequencies; zero-voltage turn-off; Circuit simulation; Diodes; Insulated gate bipolar transistors; Reactive power; Rectifiers; Snubbers; Switches; Switching circuits; Switching frequency; Zero voltage switching;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1994. APEC '94. Conference Proceedings 1994., Ninth Annual
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-1456-5
DOI :
10.1109/APEC.1994.316387
