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

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 sinusoida...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 1999-08, Vol.46 (4), p.796-802
Main Authors: Prado, R.N.D., Bonafldo, S.A.
Format: Article
Language:English
Subjects:
Ballast
Converters
Current supplies
Electronic ballasts
Electronics
Equations
Fluorescent lamps
Line voltage
Mathematical analysis
Power factor
Reactive power
Stress
Switches
Switching converters
Switching frequency
Voltage
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Description
Summary: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.
ISSN:0278-0046
1557-9948
DOI:10.1109/41.778245