DocumentCode
2950049
Title
Low-frequency sine wave modulation of 250 W high-frequency metal halide lamp ballasts
Author
Wang, Jianqiang ; Xu, Dianguo ; Yang, Hua
Author_Institution
Dept. of Electr. Eng., Harbin Inst. of Technol., China
Volume
2
fYear
2004
fDate
2004
Firstpage
1003
Abstract
In 40-60 kHz, the acoustic resonance band of 250 W metal halide (MH) lamps is studied. The theoretical prediction and experimental observation shows no same bands in which various MH lamps can operate stably. But the injection of approximate low-frequency sine wave modulation is effective method for eliminating acoustic resonance if the center operating frequency of electronic ballast is beyond 47 kHz. Experimental results of ballast prototype support the proposed approach.
Keywords
acoustic resonance; discharge lamps; lamp accessories; modulation; 250 W; 40 to 60 kHz; acoustic resonance elimination; electronic ballast; high-frequency metal halide lamp ballasts; low-frequency sine wave modulation; Acoustic waves; Circuits; Electronic ballasts; Frequency estimation; Gases; IEEE members; Lamps; Prototypes; Resonance light scattering; Resonant frequency;
fLanguage
English
Publisher
ieee
Conference_Titel
Applied Power Electronics Conference and Exposition, 2004. APEC '04. Nineteenth Annual IEEE
Print_ISBN
0-7803-8269-2
Type
conf
DOI
10.1109/APEC.2004.1295945
Filename
1295945
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