Title :
High power factor correction circuit using valley charge-pumping for low cost electronic ballasts
Author :
Chae, Gyun ; Youn, Yong-Sik ; Cho, Gyu-Hyeong
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea
Abstract :
A new cost-effective power factor correction (PFC) circuit, the improved valley fill (IVF) circuit combined with charge pumping capacitors (CPCs), used as an electronic ballast for fluorescent lamps is proposed. The IVF can adjust the valley voltage higher than half of the peak line voltage. The CPCs draw current from the input line to make up the current waveform during the valley interval. The measured power factor and total harmonic distortion for a prototype electronic ballast are 0.996 and 5.5%, respectively
Keywords :
fluorescent lamps; harmonic distortion; lamp accessories; power capacitors; power convertors; power factor correction; power system harmonics; charge pumping capacitors; current waveform; electronic ballasts; fluorescent lamps; improved valley fill circuit; peak line voltage; power factor correction circuit; total harmonic distortion; Capacitors; Charge pumps; Circuits; Distortion measurement; Electronic ballasts; Fluorescent lamps; In vitro fertilization; Power factor correction; Power measurement; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 1998. PESC 98 Record. 29th Annual IEEE
Conference_Location :
Fukuoka
Print_ISBN :
0-7803-4489-8
DOI :
10.1109/PESC.1998.703455
