Title :
Single-stage electronic ballast with unity power factor
Author :
Do, H.-L. ; Seok, K.-W. ; Kwon, B.-H.
Author_Institution :
Dept. of Electron. & Electr. Eng., Pohang Univ., South Korea
fDate :
3/1/2001 12:00:00 AM
Abstract :
A single-stage electronic ballast with unity power factor is proposed. A saturable transformer constituting the self-oscillating drive limits the lamp current and dominates the switching frequency of the ballast. The proposed ballast has high energy efficiency: low cost and high reliability compared to conventional high-power-factor (HPF) electronic ballasts. Experimental results obtained on two 40 W fluorescent lamps are discussed
Keywords :
fluorescent lamps; lamp accessories; power factor correction; switching circuits; transformers; 40 W; fluorescent lamps; high energy efficiency; high reliability; high-power-factor; lamp current limiting; low cost; saturable transformer; self-oscillating drive; single-stage electronic ballast; unity power factor;
Journal_Title :
Electric Power Applications, IEE Proceedings -
DOI :
10.1049/ip-epa:20010087
