Abstract:
Pulsed power applications like lasers, electronic beam welding etc require
conversion of power at high voltages and at high switching speed. Numerous
methods and topologies are available for tackling the requirement but selection of
a specific topology requires thorough analysis. This research work deals with a 48
V to 800V DC- DC converter capable of charging a 22 µf capacitor within 100
ms.
After study of many topologies, full bridge topology has been selected for
this specific application keeping in view the advantages for this specific
requirement. MOSFETs are switched using Pulse Width Modulated pulses. Soft
start has also been incorporated. The complete converter has been simulated in
PSPICE and results achieved are shown and discussed.
