A high-power-factor electronic ballast using a flyback push-pullintegrated converter
Prado, R.N.D.
Bonafldo, S.A.
Dept. of Electron. & Comput., Fed. Univ. of Santa Maria;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Aug 1999
Volume: 46,
Issue: 4
On page(s): 796-802
ISSN: 0278-0046
References Cited: 16
CODEN: ITIED6
INSPEC Accession Number: 6348051
Digital Object Identifier: 10.1109/41.778245
Current Version Published: 2002-08-06
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
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