Energy Channeling LED Driver Technology to Achieve Flicker-Free Operation with True Single Stage Power Factor Correction

Peng Fang; Yan Fei Liu

doi:10.1109/TPEL.2016.2586502

Energy Channeling LED Driver Technology to Achieve Flicker-Free Operation with True Single Stage Power Factor Correction

Peng Fang, Yan Fei Liu

Research output: Contribution to journal › Article › peer-review

47 Scopus citations

Abstract

A conventional single stage ac-dc LED driver usually produces significant twice-line-frequency ripple current when a high power factor is achieved. The ripple current causes a lighting flicker of the LEDs. In this paper, an energy channeling ripple cancellation LED driver is proposed. It achieves true single stage power conversion, maintains a high power factor while significantly removing the twice-line-frequency ripple current-flicker free LED driving. An 8.5 W, 50 V/0.17 A Buck-Boost experimental prototype has been built to verify the proposed method.

Original language	English (US)
Article number	7502125
Pages (from-to)	3892-3907
Number of pages	16
Journal	IEEE Transactions on Power Electronics
Volume	32
Issue number	5
DOIs	https://doi.org/10.1109/TPEL.2016.2586502
State	Published - May 2017
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2016 IEEE.

Keywords

Energy channeling
offline LED driver
power factor correction
single-stage power conversion

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title = "Energy Channeling LED Driver Technology to Achieve Flicker-Free Operation with True Single Stage Power Factor Correction",

abstract = "A conventional single stage ac-dc LED driver usually produces significant twice-line-frequency ripple current when a high power factor is achieved. The ripple current causes a lighting flicker of the LEDs. In this paper, an energy channeling ripple cancellation LED driver is proposed. It achieves true single stage power conversion, maintains a high power factor while significantly removing the twice-line-frequency ripple current-flicker free LED driving. An 8.5 W, 50 V/0.17 A Buck-Boost experimental prototype has been built to verify the proposed method.",

keywords = "Energy channeling, offline LED driver, power factor correction, single-stage power conversion",

author = "Peng Fang and Liu, {Yan Fei}",

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AB - A conventional single stage ac-dc LED driver usually produces significant twice-line-frequency ripple current when a high power factor is achieved. The ripple current causes a lighting flicker of the LEDs. In this paper, an energy channeling ripple cancellation LED driver is proposed. It achieves true single stage power conversion, maintains a high power factor while significantly removing the twice-line-frequency ripple current-flicker free LED driving. An 8.5 W, 50 V/0.17 A Buck-Boost experimental prototype has been built to verify the proposed method.

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Energy Channeling LED Driver Technology to Achieve Flicker-Free Operation with True Single Stage Power Factor Correction

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