Title
Acoustic-Resonance-Free High-Frequency Electronic Ballast for Metal Halide Lamps
Abstract
To avoid the acoustic resonance on operating metal halide lamps, an autofrequency-searching method is implemented on the high-frequency electronic ballast. The proposed method allows the use of a high-frequency electronic ballast, making the ballast able to adjust the operating frequency automatically as soon as the acoustic resonance is detected and, consequently, to locate it at a stable frequency. The electronic ballast achieves a high efficiency and a high power density through the employment of a high-frequency resonant inverter with an embedded buck-boost converter for power-factor correction and lamp power regulation. The control strategy is realized by a microprocessor along with the acoustic-resonance detection circuit. The operation of autofrequency searching is illustrated by the experiments on an electronic ballast designed for 70-W metal halide lamps.
Year
DOI
Venue
2008
10.1109/TIE.2008.923289
IEEE Transactions on Industrial Electronics
Keywords
Field
DocType
Electronic ballasts,Resonance,Resonant frequency,Acoustic signal detection,Resonant inverters,Employment,Microprocessors,Circuit optimization,Fluorescent lamps,Fluctuations
Metal-halide lamp,Ballast,Power factor,Automatic frequency control,Power density,Halide,Resonant inverter,Engineering,Electrical engineering,Acoustic resonance
Journal
Volume
Issue
ISSN
55
10
0278-0046
Citations 
PageRank 
References 
6
0.85
3
Authors
3
Name
Order
Citations
PageRank
Chin-Sien Moo1112.90
Chun-Kai Huang2307.04
Ching-Yuan Yang322736.15