A high-power-factor electronic ballast using a flyback push-pull integrated converter

Author

Prado, R.N.D. ; Bonafldo, S.A.

Author_Institution

Dept. of Electron. & Comput., Fed. Univ. of Santa Maria

Volume

46

Issue

4

fYear

1999

fDate

8/1/1999 12:00:00 AM

Firstpage

796

Lastpage

802

Abstract

This paper describes a high-power-factor electronic ballast for fluorescent lamps. The converter offers a high power factor and a high-frequency supply to the lamp using a single switch. In spite of its simplicity, an excellent performance concerning load and supply is achieved, ensuring a sinusoidal and in-phase supply current. High power factor is achieved by using a flyback converter operating in discontinuous conduction mode. Operating principle, design equations, component stress, and efficiency are presented. Experimental results have been obtained for one 40-W fluorescent lamp operating at 50-kHz switching frequency and 220-V line voltage

Keywords

DC-DC power convertors; equivalent circuits; fluorescent lamps; lamp accessories; power factor correction; power supplies to apparatus; 220 V; 40 W; 50 Hz; component stress; design equations; discontinuous conduction mode; efficiency; fluorescent lamps; flyback push-pull integrated converter; high-frequency supply; high-power-factor electronic ballast; in-phase supply current; operating principle; single switch; sinusoidal supply current; Current supplies; Electronic ballasts; Equations; Fluorescent lamps; Reactive power; Stress; Switches; Switching converters; Switching frequency; Voltage;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/41.778245

Filename

778245