Title :
Analysis, design, and optimization of a fixed-frequency parallel resonant converter
Author_Institution :
Energy Management Corp., Salt Lake City, UT, USA
Abstract :
A high-frequency link parallel resonant Dc/DC power converter is analyzed for fixed-frequency operation using the constant current model and the state-space approach. The fixed-frequency (FF) parallel resonant converter (PRC) is seen to enter different operating modes depending on the output load level. It is shown that, though the converter enters leading power factor operation for less than 50% load condition, the switch current is still force commutated, which preserves the advantages of lagging power factor operation. A general solution which describes all the possible modes of FF PRC operation under steady-state conditions is obtained. A method of obtaining the optimum operating point under certain constraints is developed and is used to present a simple design procedure. Experimental results showing the different modes of FF PRC operation obtained with a MOSFET-based converter are given to verify the theory
Keywords :
commutation; insulated gate field effect transistors; load (electric); network analysis; network synthesis; optimisation; power convertors; power factor; power transistors; state-space methods; HF link; MOSFET; constant current model; design; fixed-frequency operation; forced commutation; network analyses; network synthesis; operating point; optimization; output load; parallel resonant Dc/DC power converter; power factor; power transistors; state-space approach; switch current; DC-DC power converters; Design optimization; Frequency control; MOSFET circuits; Partial response channels; Reactive power; Resonance; Resonant inverters; Switches; Voltage control;
Conference_Titel :
Industrial Electronics, Control, Instrumentation, and Automation, 1992. Power Electronics and Motion Control., Proceedings of the 1992 International Conference on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-0582-5
DOI :
10.1109/IECON.1992.254638
