A novel method of using second-order lamp model to design dimmable fluorescent lamps electronic ballast

被引:0
|
作者
Cheng, CA [1 ]
Liang, TJ [1 ]
Chuang, CM [1 ]
Chen, JF [1 ]
机构
[1] Natl Cheng Kung Univ, Dept Elect Engn, Power Elect Lab, Tainan 70101, Taiwan
关键词
D O I
暂无
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
A novel method for designing half-bridge series-parallel resonant inverters suitable for driving various fluorescent lamps with dimming feature is introduced. The analysis of proposed method is specially concerned with the second-order high frequency equivalent model of fluorescent lamps. To ensure zero-voltage-switching, the L6569-driven power stage is set to operate above the resonant frequency. A design example are presented for a 40W fluorescent lamp operating at a 30kHz switching frequency and 110V-rms utility line voltage. Quasi-sinusoidal waveforms are obtained and the crest factor of lamp current is smaller than 1.7, resulting in longer lamp life. Lamps of various powers and brands are tested. All show good performance, verifying the functionality of the proposed procedure.
引用
收藏
页码:1033 / 1037
页数:5
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