DocumentCode
843911
Title
Acoustic-resonance-free electronic ballast for automotive HID lamps
Author
Cheng, C.A. ; Lin, K.-J. ; Kao, Y.-M.
Author_Institution
Dept. of Electr. Eng., I-Shou Univ., Kaohsiung
Volume
44
Issue
17
fYear
2008
Firstpage
1027
Lastpage
1029
Abstract
A novel cost-effective and acoustic-resonance-free electronic ballast used to drive automotive high intensity discharging (HID) lamps that utilise a constant lamp power control scheme is proposed. The presented ballast is comprised of a buck-boost flyback converter to provide negative DC voltages and a half-bridge-type inverter to supply the lamp with low-frequency, square-wave AC voltage/current. Owing to its low-frequency operation, no acoustic resonance occurs on the automotive HID lamps. Design guidelines and experimental results are demonstrated for a 35 W automotive HID lamp prototype ballast operating at 400 Hz switching frequency with battery input DC voltage of 12 V.
Keywords
discharge lamps; invertors; lamp accessories; lighting control; power control; power convertors; acoustic-resonance-free electronic ballast; automotive HID lamps; buck-boost flyback converter; constant lamp power control scheme; frequency 400 Hz; half-bridge-type inverter; high intensity discharging lamps; power 35 W; switching frequency; voltage 12 V;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:20080824
Filename
4606606
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