Title :
A critical-conduction-mode single-stage power-factor-correction electronic ballast
Author :
Tao, Fengfeng ; Lee, Fred C.
Author_Institution :
Centre for Power Electron. Syst., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
fDate :
6/22/1905 12:00:00 AM
Abstract :
A critical-conduction-mode single-stage power-factor-correction (PFC) electronic ballast is presented in this paper. The proposed ballast combines the power-factor-correction stage with a conventional half bridge DC/AC inverter into a single-stage to reduce the cost. The power factor correction stage is a boost-like converter operating in critical conduction mode so that a high power factor is achieved naturally. By exploiting voltage divider, the ratio of line peak voltage to DC-bus voltage can be chosen as a large value of near one, yet a good power factor can be achieved. Theoretical analysis and experimental results for two 45-watt fluorescent lamps are presented
Keywords :
AC-AC power convertors; AC-DC power convertors; DC-AC power convertors; bridge circuits; fluorescent lamps; invertors; lamp accessories; power MOSFET; power factor correction; power semiconductor switches; rectifying circuits; switching circuits; 45 W; boost-like converter; critical conduction mode; critical-conduction-mode single-stage power-factor-correction electronic ballast; fluorescent lamps; half bridge DC/AC inverter; power factor correction stage; voltage divider; Capacitors; Circuits; Costs; Electronic ballasts; Filters; Inductors; Inverters; Reactive power; Switches; Voltage;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2000. APEC 2000. Fifteenth Annual IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-5864-3
DOI :
10.1109/APEC.2000.826165
