High power high frequency soft switching converter using serial connected switches

N. Lapassat (1) , D. Chatroux (1) , D Lafore (2) , J. F. Villard (1)

1 CEA - Commissariat à l'énergie atomique et aux énergies alternatives
2 ESIM - ESIM

This paper presents a chopper topology suitable for high voltage, with a switch made of serial connected power devices. Serial connection of power components encounters two major problems in hard switching : voltage unbalance and overcurrents at turn on due to parasitic capacitances to ground. The proposed topology takes advantage of soft switching to reduce both problems by a suitable utilisation of inductors and capacitors. A converter tested at 9kV input voltage is also presented.

Keywords: serial connection; soft switching high power high frequency switch mode converter; soft switching; high power high frequency switch mode converter

Domains: Electric power

N. Lapassat, D. Chatroux, D Lafore, J. F. Villard. High power high frequency soft switching converter using serial connected switches. EP2 98, Oct 1998, Grenoble, France. ⟨cea-03293910⟩