Dimming control by variation of the switching frequency for high-intensity discharge lamps

In this paper, a high-frequency dimmable electronic power supply for the high-pressure sodium lamp is presented. The method includes a full bridge rectifier generating a dc-link voltage and a half bridge inverter to generate a frequency swept lamp power signal to drive the lamp while avoiding acoust...

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Bibliographic Details
Published in:International Journal of Lighting Research and Technology 2014-12, Vol.46 (6), p.729-738
Main Authors: Nehdi, MN, Elloumi, H, Nsibi, W, Chammam, A, Sellami, A, Zissis, G
Format: Article
Language:English
Subjects:
Ballast
Bridges (structures)
Circuits
Dimming
Electronics
Energy conservation
Engineering Sciences
Lamps
Lighting
Lighting systems
Optics
Photonic
Sodium
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Summary:In this paper, a high-frequency dimmable electronic power supply for the high-pressure sodium lamp is presented. The method includes a full bridge rectifier generating a dc-link voltage and a half bridge inverter to generate a frequency swept lamp power signal to drive the lamp while avoiding acoustic resonance. A dimming technique for a resonant circuit electronic ballast based on a variable frequency is introduced. In addition, the ability in the dimming range is demonstrated by experiments and simulation in order to verify the performance of the proposed circuit. A dimming range from 100% to 50% has been achieved. The efficiency is always higher than 89% and the ballast can accurately follow a fixed dimming plan.
ISSN:1477-1535
1365-7828
1477-0938
DOI:10.1177/1477153513501103