AC-DC LED Driver With an Additional Active Rectifier and a Unidirectional Auxiliary Circuit for AC Power Ripple Isolation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

23 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Article number8306898
Pages (from-to)685-699
Journal / PublicationIEEE Transactions on Power Electronics
Volume34
Issue number1
Online published5 Mar 2018
Publication statusPublished - Jan 2019
Externally publishedYes

Abstract

Single-phase ac light-emitting diode (LED) lamps require long-lifespan and high-efficiency ac-dc power converters for power factor correction (PFC) and current regulation. In such converters, the inherent double-line-frequency ripple power from the ac source is isolated from the load by large electrolytic capacitors (E-caps) or E-cap-less active circuits to improve reliability and lifespan. This paper presents an ac-dc LED driver with an additional active rectifier and a unidirectional auxiliary circuit for ripple power isolation. As compared with other similar designs, the proposed LED driver operates with reduced redundant power processing and a lower voltage on the storage capacitor, and the additional active circuits include fewer power components. The prototype with small polymer-hybrid capacitors and ceramic capacitors is separately tested in the experiment.

Research Area(s)

  • AC-DC converters, auxiliary circuit, LED driver, light-emitting diode (LED), power factor correction (PFC)

Citation Format(s)

AC-DC LED Driver With an Additional Active Rectifier and a Unidirectional Auxiliary Circuit for AC Power Ripple Isolation. / Shan, Zhenyu; Chen, Xiaomei; Jatskevich, Juri; Tse, Chi K.

In: IEEE Transactions on Power Electronics, Vol. 34, No. 1, 8306898, 01.2019, p. 685-699.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review