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The high Efficiency Ballast for MHD Lamp with a Frequency Controlled Synchronous Rectifier  

Hyun B.C. (서울대 전기컴퓨터공학부)
Lee I.K. (서울대 전기컴퓨터공학부)
Cho B.H. (서울대 전기컴퓨터공학부)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.10, no.4, 2005 , pp. 356-362 More about this Journal
Abstract
In this paper, in order to develop a simple and high efficient ballast without an external ignitor, a half-bridge type ballast with a coupled inductor and a frequency controlled synchronous rectifier is proposed. The Internal LC resonance of the buck converter is used to generate a high voltage pulse for the ignition, and the coupled inductor filter is used for steady state ripple cancellation. Also, a synchronous buck converter is applied for the DC/DC converter stage. In order to improve the efficiency of the ballast, a frequency control method is proposed. This scheme reduces a circulation current and trun off loss of the MOSFET switch on the constant power operation, which results in increase of the efficiency of the ballast system about 4$\%$, compared to a fixed frequency control. It consists a 2-stage version ballast with a PFC circuit. The results are verified nth hardware experiments.
Keywords
2-stages; synchronous; frequency control; coupled inductor;
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  • Reference
1 S.Cuk and R.D. Middlebrook, 'Advances in Switch-Mode Power Conversion',Pasadena, CA: Tesla Co, Vol. I-III,1983
2 H.J. Faehnrich and E. Rasch, ' Electronics Ballasts for Metal Halide Lamps', Joumal of the Illuminating Engineering Society, pp131-140,Summer,1988
3 Henze, C.P., Martin, H.C , Parsley, D.W. 'Zero-voltage switching in high frquency power converters using pulse width modulation',APEC88, pp.33-40
4 Kyu-Chan Lee,B.H. Cho, ' Design and analysis of automotive HID lamp ballast system using auxiliary winding', PESC00. pp.544-549 Vol.l
5 Djekic, O., Brkovic, M,Roy, 'A High frequency synchronous buck converters for low voltage applications', PESC98, pp.1248-1254 Vol.2
6 H.Nishimura, H.Nagase, K.U. chihashi, T.Shiomi, M. Fukuhara, 'A New Electronic Ballast for HID Lamps', Journal of the illuminating Engineering Society, pp.70-76,Summer,1998
7 Yiyoung Sun, Takeshi Goriki, 'Driving Circuit For Hight intensity Discharge Lamp Electronic Ballast', US patent 6,020,691
8 Byoung-Chul Cho, S.J .Moon, I.K. Lee and B.H. Cho, 'A New HID Lamp Ballast using Internal LC resonance and Coupled Inductor Filter', ICPE2001, pp.737-740