Title :
A unity power factor electronic ballast for fluorescent lighting
Author :
Prado, Ricardo N do ; Bonaldo, S.A. ; Greff, S. ; Bisogno, Faábio E.
Author_Institution :
DELC-NUPEDEE-PPGEE, Fed. Univ. of Santa Maria, Brazil
Abstract :
This paper describes a high power factor electronic ballast for fluorescent lamps. The converter offers a high power factor and high-frequency supply to the lamp. 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, control characteristics, 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; fluorescent lamps; lamp accessories; power factor; power supplies to apparatus; switching circuits; 220 V; 40 W; 50 kHz; component stress; control characteristics; converter; design equations; discontinuous-conduction mode; efficiency; fluorescent lamps; fluorescent lighting; flyback converter; high-frequency supply; in-phase sinusoidal supply current; operating principle; unity power factor electronic ballast; Acoustic noise; Circuits; Electronic ballasts; Fluorescence; Fluorescent lamps; Frequency; Reactive power; Switches; Switching converters; Voltage control;
Conference_Titel :
Industry Applications Conference, 1997. Thirty-Second IAS Annual Meeting, IAS '97., Conference Record of the 1997 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-4067-1
DOI :
10.1109/IAS.1997.626394
