Title :
Self-oscillating single-stage power-factor-correction electronic ballast with duty-ratio and frequency modulation
Author :
Tao, Fengfeng ; Zhao, Qun ; Zhou, Jinghai ; Lee, Fred C. ; Onishi, Naoki
Author_Institution :
Bradley Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
This paper presents the analysis and design of self-oscillating single-stage power-factor-correction electronic ballast with duty-ratio and frequency modulation. The proposed ballast integrates a boost converter with a self-oscillating half-bridge inverter. A near unity power factor as well as low bus voltage, low lamp current crest factor, and constant lamp power is achieved by the proposed novel duty-ratio and frequency modulation scheme. Experimental results are provided for verification
Keywords :
DC-AC power convertors; bridge circuits; discharge lamps; frequency modulation; invertors; lamp accessories; power factor correction; boost converter; constant lamp power; duty-ratio; frequency modulation; lamp current crest factor; self-oscillating half-bridge inverter; self-oscillating single-stage power-factor-correction electronic ballast; unity power factor; Circuits; Costs; Electronic ballasts; Frequency modulation; Inductors; Inverters; Lamps; Reactive power; Switches; Voltage;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2001. APEC 2001. Sixteenth Annual IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-6618-2
DOI :
10.1109/APEC.2001.912443
