Title :
A soft switching active snubber optimized for IGBT´s in single switch unity power factor three-phase diode rectifiers
Author :
Chen, Keming ; Elasser, Ahined ; Torrey, David A.
Author_Institution :
REM Technol., Schenectady, NY, USA
fDate :
7/1/1995 12:00:00 AM
Abstract :
This paper describes a soft switching active snubber for an IGBT operating in a single switch unity power factor three-phase diode rectifier. The soft switching snubber circuit provides zero-voltage turn-off for the main switch. The high turn-off losses of the IGBT due to 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 :
AC-DC power convertors; bipolar transistor switches; circuit testing; equivalent circuits; insulated gate bipolar transistors; network analysis; power bipolar transistors; power factor; power semiconductor switches; rectifying circuits; snubbers; switching circuits; voltage control; IGBT; ZVS; active snubber; experiments; simulation; soft switching; three-phase diode rectifiers; turn-off losses; unity power factor; zero-voltage switching; zero-voltage turn-off; Diodes; Insulated gate bipolar transistors; Reactive power; Rectifiers; Snubbers; Switches; Switching circuits; Switching frequency; VHF circuits; Zero voltage switching;
Journal_Title :
Power Electronics, IEEE Transactions on
