Resonant assisted buck converter for offline driving of high brightness LED replacement lamps

Xiaohui Qu; Siu Chung Wong; Chi Kong Tse

doi:10.1109/ECCE.2010.5618054

Resonant assisted buck converter for offline driving of high brightness LED replacement lamps

Xiaohui Qu, Siu Chung Wong, Chi Kong Tse

The Hong Kong Polytechnic University

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

1 Citation (Scopus)

Abstract

LEDs are prospective successors of incandescent lamps with high efficacy and long lifetime. To improve the overall luminair efficacy and lifetime, the power efficiency and lifetime of LED ballast become important factors. Efficiency gain in transformerless power converter appears attractive for applications without isolation. Driving solid-state LED bulbs such as in PAR30 style from universal mains necessitates a high voltage step-down ratio to an output voltage of about 10-20 V, which is very common in industrial applications. Traditional step-down PWM buck power converter may suffer from a poor efficiency due to long diode freewheeling at a small duty cycle. In this paper, we propose a resonant assisted buck converter to achieve high voltage step-down ratio and high converter efficiency, whilst it can work with existing dimming drivers. The performance of the proposed LED driver is verified by a prototype ballast.

Original language	English
Title of host publication	2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings
Pages	166-170
Number of pages	5
DOIs	https://doi.org/10.1109/ECCE.2010.5618054
Publication status	Published - 20 Dec 2010
Event	2010 2nd IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Atlanta, GA, United States Duration: 12 Sept 2010 → 16 Sept 2010

Conference

Conference	2010 2nd IEEE Energy Conversion Congress and Exposition, ECCE 2010
Country/Territory	United States
City	Atlanta, GA
Period	12/09/10 → 16/09/10

ASJC Scopus subject areas

Energy Engineering and Power Technology
Renewable Energy, Sustainability and the Environment

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1109/ECCE.2010.5618054

Cite this

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title = "Resonant assisted buck converter for offline driving of high brightness LED replacement lamps",

abstract = "LEDs are prospective successors of incandescent lamps with high efficacy and long lifetime. To improve the overall luminair efficacy and lifetime, the power efficiency and lifetime of LED ballast become important factors. Efficiency gain in transformerless power converter appears attractive for applications without isolation. Driving solid-state LED bulbs such as in PAR30 style from universal mains necessitates a high voltage step-down ratio to an output voltage of about 10-20 V, which is very common in industrial applications. Traditional step-down PWM buck power converter may suffer from a poor efficiency due to long diode freewheeling at a small duty cycle. In this paper, we propose a resonant assisted buck converter to achieve high voltage step-down ratio and high converter efficiency, whilst it can work with existing dimming drivers. The performance of the proposed LED driver is verified by a prototype ballast.",

author = "Xiaohui Qu and Wong, {Siu Chung} and Tse, {Chi Kong}",

year = "2010",

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doi = "10.1109/ECCE.2010.5618054",

language = "English",

isbn = "9781424452866",

pages = "166--170",

booktitle = "2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings",

note = "2010 2nd IEEE Energy Conversion Congress and Exposition, ECCE 2010 ; Conference date: 12-09-2010 Through 16-09-2010",

}

Qu, X, Wong, SC & Tse, CK 2010, Resonant assisted buck converter for offline driving of high brightness LED replacement lamps. in 2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings., 5618054, pp. 166-170, 2010 2nd IEEE Energy Conversion Congress and Exposition, ECCE 2010, Atlanta, GA, United States, 12/09/10. https://doi.org/10.1109/ECCE.2010.5618054

Resonant assisted buck converter for offline driving of high brightness LED replacement lamps. / Qu, Xiaohui; Wong, Siu Chung; Tse, Chi Kong.
2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings. 2010. p. 166-170 5618054.

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

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N2 - LEDs are prospective successors of incandescent lamps with high efficacy and long lifetime. To improve the overall luminair efficacy and lifetime, the power efficiency and lifetime of LED ballast become important factors. Efficiency gain in transformerless power converter appears attractive for applications without isolation. Driving solid-state LED bulbs such as in PAR30 style from universal mains necessitates a high voltage step-down ratio to an output voltage of about 10-20 V, which is very common in industrial applications. Traditional step-down PWM buck power converter may suffer from a poor efficiency due to long diode freewheeling at a small duty cycle. In this paper, we propose a resonant assisted buck converter to achieve high voltage step-down ratio and high converter efficiency, whilst it can work with existing dimming drivers. The performance of the proposed LED driver is verified by a prototype ballast.

AB - LEDs are prospective successors of incandescent lamps with high efficacy and long lifetime. To improve the overall luminair efficacy and lifetime, the power efficiency and lifetime of LED ballast become important factors. Efficiency gain in transformerless power converter appears attractive for applications without isolation. Driving solid-state LED bulbs such as in PAR30 style from universal mains necessitates a high voltage step-down ratio to an output voltage of about 10-20 V, which is very common in industrial applications. Traditional step-down PWM buck power converter may suffer from a poor efficiency due to long diode freewheeling at a small duty cycle. In this paper, we propose a resonant assisted buck converter to achieve high voltage step-down ratio and high converter efficiency, whilst it can work with existing dimming drivers. The performance of the proposed LED driver is verified by a prototype ballast.

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BT - 2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings

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Resonant assisted buck converter for offline driving of high brightness LED replacement lamps

Abstract

Conference

ASJC Scopus subject areas

UN SDGs

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