Modified valley fill high power factor electronic ballast for compact fluorescent lamps

Author

Kheraluwala, Mustansir H. ; El-Hamamsy, Sayed Amr

Author_Institution

Corp. Res. & Dev., Gen. Electr. Co., Schenectady, NY, USA

Volume

1

fYear

1995

fDate

18-22 Jun 1995

Firstpage

10

Abstract

A simple, lost cost, high power factor ballast, referred to as the modified valley fill circuit, for compact fluorescent lamps is introduced. This circuit peak charges the valley fill (electrolytic) capacitor from an auxiliary winding on the high frequency ballasting inductor to a fraction of the peak line voltage, where the input power factor is optimized at 0.95. A simple lamp current feedback scheme is employed to keep the lamp current crest factor near 1.7. The overall efficiency is in the range of 87-89%

Keywords

AC-AC power convertors; electric current control; electrolytic capacitors; feedback; fluorescent lamps; lamp accessories; lighting control; power capacitors; power factor correction; power inductors; power system harmonics; 87 to 89 percent; auxiliary winding; compact fluorescent lamps; electrolytic capacitor; electronic ballast; high frequency ballasting inductor; lamp current feedback; modified valley fill circuit; power factor; Capacitors; Circuits; Costs; Electronic ballasts; Feedback; Fluorescent lamps; Frequency; Inductors; Reactive power; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1995. PESC '95 Record., 26th Annual IEEE

Conference_Location

Atlanta, GA

Print_ISBN

0-7803-2730-6

Type

conf

DOI

10.1109/PESC.1995.474785

Filename

474785