Title :
Novel zero-voltage and zero-current-switching (ZVZCS) full-bridge PWM converter using coupled output inductor
Author :
Choi, Hang-Seok ; Kim, J.W. ; Cho, B.H.
Author_Institution :
Dept. of Electr. Eng., Seoul Nat. Univ., South Korea
Abstract :
A novel zero voltage and zero current switching (ZVZCS) full bridge (FB) PWM converter is proposed. The new converter improves the drawbacks of the previously proposed ZVZCS FB PWM converters. A simple auxiliary circuit with neither lossy components nor active switches achieves ZVZCS of the primary switches. Since the proposed converter has many advantages such as simple auxiliary circuit, high efficiency, low voltage stress of the rectifier diode and self-adjustment of the circulating current, it is very attractive for the high power applications. The principles of operation and design considerations are presented. The experimental verifications from 4 kW prototype converter operating at 80 kHz are presented
Keywords :
PWM power convertors; bridge circuits; power inductors; power semiconductor switches; switching circuits; 4 kW; 80 kHz; DC/DC power conversion; ZVZCS; auxiliary circuit; circulating current self-adjustment; coupled output inductor; design considerations; high power applications; operating principles; primary switches; rectifier diode stress reduction; zero-voltage zero-current-switching full-bridge PWM converter; Bridge circuits; Diodes; Low voltage; Pulse width modulation converters; Rectifiers; Stress; Switches; Switching circuits; Zero current switching; Zero voltage switching;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2001. APEC 2001. Sixteenth Annual IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-6618-2
DOI :
10.1109/APEC.2001.912484
