Title :
A novel single-stage constant-wattage high-power-factor electronic ballast
Author :
Alonso, J. Marcos ; Calleja, Antonio J. ; López, Emilio ; Ribas, Javier ; Rico-Secades, Manuel
Author_Institution :
Oviedo Univ., Spain
fDate :
12/1/1999 12:00:00 AM
Abstract :
A novel single-stage high-power-factor electronic ballast is presented in this paper. The ballast is obtained from the integration of a buck-boost converter and a half-bridge LC resonant inverter. The ballast features lamp power regulation against line voltage fluctuations together with high power factor and dimming capability. The steady-state analysis of the ballast is performed and a low-frequency model of the input stage is derived. A design example, including closed-loop circuitry, is also presented. Finally, some experimental results from a laboratory prototype are shown
Keywords :
DC-AC power convertors; DC-DC power convertors; bridge circuits; discharge lamps; invertors; lamp accessories; lighting control; power factor correction; buck-boost converter; closed-loop circuitry; design example; dimming capability; half-bridge LC resonant inverter; input stage low-frequency model; lamp power regulation; line voltage fluctuations; single-stage constant-wattage high-power-factor electronic ballast; steady-state analysis; Circuits; Electronic ballasts; Laboratories; Lamps; Performance analysis; Prototypes; Reactive power; Resonant inverters; Steady-state; Voltage fluctuations;
Journal_Title :
Industrial Electronics, IEEE Transactions on