AC/AC converter with Class DE tuned power oscillator

Author

Matsuo, Mitsuhiro ; Sekiya, Hiroo ; Koizumi, Hirotaka ; Suetsugu, Tadashi ; Mori, Shinsaku ; Sasase, Iwao

Author_Institution

Dept. of Electr. Eng., Keio Univ., Yokohama, Japan

fYear

1998

fDate

1998

Firstpage

685

Lastpage

691

Abstract

We present the analysis and experimental results for a novel AC/AC converter with Class DE tuned power oscillator which is one application of a Class DE inverter. The proposed circuit has several desirable features. First, it operates at high frequency and high efficiency region by means of Class E switching conditions. Second, it has no external gate-drive circuit to drive the MOSFETs. Therefore it is lighter and smaller than a conventional Class DE inverter. Third, in contrast to a conventional Class DE oscillator, the proposed circuit has AC input so that it has no reference inverter for starting up the oscillator. The converter is applicable for UPS, battery charger, and electronic ballasts for lighting. Experimental results matched well with the theoretical predictions. Measured efficiency was over 70% with 1 MHz 4.6 W output

Keywords

AC-AC power convertors; oscillators; switching circuits; 1 MHz; 4.6 W; AC input; AC/AC converter; Class DE inverter; Class DE tuned power oscillator; Class E switching conditions; UPS; battery charger; electronic lighting ballasts; high efficiency; high frequency; Batteries; DC-DC power converters; Frequency; MOSFETs; Oscillators; Power engineering and energy; Resonant inverters; Switches; Switching circuits; Uninterruptible power systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Energy Conference, 1998. INTELEC. Twentieth International

Conference_Location

San Francisco, CA

Print_ISBN

0-7803-5069-3

Type

conf

DOI

10.1109/INTLEC.1998.793630

Filename

793630