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A Novel Constant-Power Control for Metal-Halide Lamp Electronic Ballasts with Dimming Capability.
- Source :
-
IEEE Transactions on Plasma Science . Jun2010 Part 2, Vol. 38 Issue 6, p1482-1488. 7p. - Publication Year :
- 2010
-
Abstract
- In this paper, a new dimmable electronic ballast for metal-halide (MH) lamps based on a three-stage structure is proposed. The presented dimmable electronic ballast can dim smoothly without acoustic resonance from 50% to 100% brightness. A novel current-control method with constant-power capability is also presented to solve the power-drifting problem resulting from the V– I characteristic variations between lamps or caused by the aging of lamp. The dimming capability allows the ballast to adjust its working condition according to the environments or the dimming command; this further improves the energy efficiency. Finally, a 150-W MH lamp ballast prototype is built to verify the feasibility of the proposed methods. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 00933813
- Volume :
- 38
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Plasma Science
- Publication Type :
- Academic Journal
- Accession number :
- 53572785
- Full Text :
- https://doi.org/10.1109/TPS.2010.2045904