Title :
A full bridge ZCS PWM converter for high voltage and high power applications
Author :
Iannello, Chris ; Luo, Shiguo ; Batarseh, Issa
Author_Institution :
Sch. of Electr. Eng. Comput. Sci., Central Florida Univ., Orlando, FL, USA
Abstract :
This paper presents the detailed analysis of a full bridge zero current switched (FB-ZCS) PWM converter that is suitable for high-voltage and high-power DC applications. It exhibits excellent ability to incorporate parasitic parameters, zero current turn-off characteristics for all active switches and ZVS operation for all diodes on the high voltage side. Based on the features of high-voltage power supplies, the converter utilizes parasitic components, particularly for the high-voltage transformer, and employs fixed frequency phase-shift control to implement soft-switching commutations. Steady state analysis of the converter is presented and major features of the converter are discussed. Finally, a small signal model based on the averaging method is created and the simulated results for typical traveling wave tube (TWT) load are given
Keywords :
DC-DC power convertors; PWM power convertors; bridge circuits; commutation; phase control; switching circuits; travelling wave tubes; active switches; averaging method; diodes; fixed frequency phase-shift control; full bridge ZCS PWM converter; high power applications; high voltage applications; high voltage side; high-voltage power supplies; high-voltage transformer; parasitic components; parasitic parameters; small signal model; soft-switching commutations; steady state analysis; traveling wave tube load; zero current turn-off characteristics; Bridge circuits; Circuit faults; Diodes; Inductance; Parasitic capacitance; Pulse width modulation converters; Rectifiers; Resonance; Zero current switching; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 2000. PESC 00. 2000 IEEE 31st Annual
Conference_Location :
Galway
Print_ISBN :
0-7803-5692-6
DOI :
10.1109/PESC.2000.879960
