Title :
An electronic ballast with high power factor and low voltage stress
Author :
Vilela, João Américo, Jr. ; Vaz, Alexandre Rodrigues ; Farias, Valdeir José ; De Freitas, Luiz Carlos ; Coelho, Ernane Antônio Alves ; Vieira, João Batista, Jr.
Author_Institution :
Dept. of Electr. Eng., Fed. Univ. of Uberlandia, Brazil
Abstract :
This paper presents a new configuration for an electronic ballast with high power factor for fluorescent lamps. The proposed ballast consists of the integration of a buck-boost converter, used as an input stage to correct the power factor and regulate the voltage on a dc bus, and a resonant half-bridge inverter to drive the lamp. The buck-boost converter operates at a constant frequency and constant duty cycle in a discontinuous conduction mode during all input cycles.
Keywords :
bridge circuits; fluorescent lamps; lamp accessories; power convertors; power factor; resonant invertors; buck-boost converter; electronic ballast; fluorescent lamps; high power factor; low voltage stress; resonant half-bridge inverter; voltage regulation; Circuits; Costs; Electronic ballasts; Fluorescent lamps; Inverters; Low voltage; Reactive power; Resonance; Stress; Switches; Fluorescent lamps; RLC circuits; buck–boost converter; half-bridge inverter; harmonic distortion; power systems harmonics;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2005.851576
