Title :
A self-excited half-bridge series-resonant ballast with automatic input current shaping
Author :
Yang, Yueh-Ru ; Chen, Chern-Lin
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
A single-stage electronic ballast for fluorescent lamps with power factor correction and soft switching is presented and analyzed. This circuit utilizes a half-bridge series-resonant power stage to obtain the zero-voltage-switching clamping-voltage merits. The input current waveform is automatically shaped by an additional high-frequency inductor. Near unity power factor can be achieved
Keywords :
bridge circuits; fluorescent lamps; lamp accessories; power factor correction; resonant power convertors; switching circuits; automatic input current shaping; clamping-voltage; fluorescent lamps; high-frequency inductor; input current waveform; near unity power factor; power factor correction; self-excited half-bridge series-resonant ballast; single-stage electronic ballast; soft switching; zero-voltage-switching; Capacitors; Diodes; Electronic ballasts; Frequency; Inductors; RLC circuits; Reactive power; Resonance; Resonant inverters; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 1996. PESC '96 Record., 27th Annual IEEE
Conference_Location :
Baveno
Print_ISBN :
0-7803-3500-7
DOI :
10.1109/PESC.1996.548685
