A novel ZCS-ZVS-PWM DC-DC buck converter for high power and high switching frequency: analysis, simulation and experimental results

Author

de Freitas, Luiz C. ; da Cruz, Douglas Ferrelra ; Farias, Valdeir Jose

Author_Institution

Univ. Federal de Uberlandia, Brazil

fYear

1993

fDate

7-11 Mar 1993

Firstpage

693

Lastpage

699

Abstract

A DC-to-DC power converter using a zero current switching zero voltage switching PWM (ZCS-ZVS-PWM) cell for high switching frequency and high power operation is presented. The proposed cell consists of only one main switch, plus an auxilliary switch, with ZVS and ZCS switching characteristics, respectively. These switches, associated with a resonant inductor and capacitor, yield zero voltage and zero current switching, providing highly efficient operating conditions for a wide range of power at high switching frequency. Converter control is accomplished by using the PWM technique, with constant frequency operation. A complete analysis of the operating principles, including output characteristics, relevant equations, state space phase, simulation, and experimental results for the buck power converter, is presented

Keywords

power convertors; power inductors; pulse width modulation; switching circuits; DC-to-DC power converter; PWM; ZCS; ZVS; buck power converter; output characteristics; resonant inductor; simulation; state space phase; switching frequency; zero current switching; zero voltage switching; Buck converters; DC-DC power converters; Pulse width modulation; Pulse width modulation converters; Resonance; Switches; Switching converters; Switching frequency; Zero current switching; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 1993. APEC '93. Conference Proceedings 1993., Eighth Annual

Conference_Location

San Diego, CA

Print_ISBN

0-7803-0983-9

Type

conf

DOI

10.1109/APEC.1993.290745

Filename

290745