Title :
A single-stage full-bridge electronic ballast for high-pressure mercury lamps
Author :
Yao, Chun Jen ; Huang-Jen Chin ; Wang, Tai Hung ; Cheng, Shih Jen ; Lo, Yu Kang ; Mou, Shann Chyi
Author_Institution :
Dept. of Electron. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei
Abstract :
We present a high-frequency full-bridge electronic ballast for high-pressure mercury lamps in high-luminance LCD projector systems. The studied electronic ballast is found to have high conversion efficiency due to the zero-voltage switching features on its power switches. A high power factor can be achieved by using developed single-stage topology. The operation principles and design considerations are analyzed and discussed in detail. A laboratory prototype is designed and implemented for driving a 150 W projector lamp. The simulation and experimental waveforms are given to verify the feasibility of the proposed method.
Keywords :
lamp accessories; liquid crystal displays; mercury vapour lamps; switches; high conversion efficiency; high-luminance LCD projector systems; high-pressure mercury lamps; power switches; single stage topology; single-stage full-bridge electronic ballast; zero voltage switching features; Electronic ballasts; Inductors; Lamps; Large screen displays; Liquid crystal displays; Reactive power; Resonance; Resonant inverters; Switched capacitor circuits; Zero voltage switching; High-Pressure Mercury Lamp; Power Factor; Single-Stage; Zero-Voltage Switching;
Conference_Titel :
SICE Annual Conference, 2008
Conference_Location :
Tokyo
Print_ISBN :
978-4-907764-30-2
Electronic_ISBN :
978-4-907764-29-6
DOI :
10.1109/SICE.2008.4655124
