Title :
Design procedure and modeling of high power, high performance, zero-voltage zero-current switched, full-bridge PWM converter
Author :
Cuadros, C. ; Lin, C.Y. ; Boyevich, D. ; Watson, R. ; Skutt, G. ; Lee, F.C. ; Ribardiere, P.
Author_Institution :
Bradley Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
A general design procedure for the high power, high performance, zero-voltage zero-current switched full-bridge (ZVZCS-FB), PWM power converter is presented. Average and small-signal models of the power converter are developed. The former shows a decrease in loss of duty-cycle with increasing output power, whereas the latter reveals negative damping effects. Both effects are produced by the interaction between blocking capacitor and saturable reactor in the primary of the output transformer. Validation of design equations and model predictions is accomplished through numerical solution of steady-state nonlinear equations and experimental results from a 10 kW, multi-module, ZVZCS power converter operating at 100 kHz, and featuring power sharing and interleaving
Keywords :
PWM power convertors; bridge circuits; damping; field effect transistor switches; power MOSFET; power field effect transistors; power semiconductor switches; switching circuits; 10 kW; 100 kHz; ZCS; ZVS; average model; blocking capacitor; circuit modelling; design equations; design procedure; duty-cycle loss; full-bridge PWM power converter; interleaving; model predictions; negative damping; power sharing; saturable reactor; small-signal model; steady-state nonlinear equations; Capacitors; Damping; Inductors; Nonlinear equations; Power generation; Predictive models; Pulse width modulation; Pulse width modulation converters; Steady-state; Switching converters;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1997. APEC '97 Conference Proceedings 1997., Twelfth Annual
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3704-2
DOI :
10.1109/APEC.1997.575736
