Title :
A 250 kHz/560 W phase modulated converter
Author :
Rajapandian, A. ; Ramanarayanan, V. ; Ramkumar, R.
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Sci., Bangalore, India
Abstract :
Phase modulated full bridge topology has emerged as the most suitable choice for high power, high voltage SMPS applications requiring high power densities. Its distinguishing features are zero voltage switching (ZVS) and constant frequency operation. In this paper, the various factors affecting the ZVS characteristics of this new topology are discussed in detail and design procedures for each of these components are developed. The concept of ZVS LIMIT is introduced. The various trade-offs involved in the design are brought out. A full-fledged 560 W/250 kHz off-line SMPS, using the phase modulation concept is designed and developed. The simulated and experimental results are presented in detail
Keywords :
bridge circuits; phase modulation; power convertors; switched mode power supplies; switching circuits; 250 kHz; 560 W; ZVS; ZVS LIMIT; constant frequency operation; design procedures; high power densities; high voltage SMPS; phase modulated converter; zero voltage switching; Analytical models; Diodes; Equations; Equivalent circuits; Inverters; MOSFETs; Parasitic capacitance; Phase modulation; Power transformers; Rectifiers;
Conference_Titel :
Power Electronics, Drives and Energy Systems for Industrial Growth, 1996., Proceedings of the 1996 International Conference on
Conference_Location :
New Delhi
Print_ISBN :
0-7803-2795-0
DOI :
10.1109/PEDES.1996.537276
