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An Electrolytic Capacitor-Less AC-DC LED Driver with a Low Power Processing Auxiliary Circuit and Ceramic Capacitors for Ripple Power Decoupling

  • Zhenyu Shan
  • , Xiaomei Chen
  • , Shengwen Fan
  • , Juri Jatskevich
  • , Chi K. Tse
  • North China University of Technology
  • University of British Columbia
  • Hong Kong Polytechnic University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Traditional ac-dc LED drivers include a large electrolytic capacitor to decouple the double-line frequency ripple power from the utility grid, which shortens the lifespan of LED lamps. This paper presents an electrolytic capacitor-less ac-dc LED driver with a low power processing auxiliary circuit and ceramic capacitors decoupling the ripple power. In this structure, the redundant power processed by the auxiliary circuit is lower and fewer components are used, comparing with existing similar designs. In addition, the ceramic capacitors that are used as the energy storage have higher energy density and lower cost. The capacitance drift of ceramic capacitors is modeled and analyzed, and the parameter design for the ceramic capacitor bank is given. Experiments on a prototype are carried out to verify the performance and design of the proposed LED driver.

Original languageEnglish
Title of host publication2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages5101-5108
Number of pages8
ISBN (Electronic)9781479973118
DOIs
StatePublished - 3 Dec 2018
Externally publishedYes
Event10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018 - Portland, United States
Duration: 23 Sep 201827 Sep 2018

Publication series

Name2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018

Conference

Conference10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018
Country/TerritoryUnited States
CityPortland
Period23/09/1827/09/18

UN SDGs

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

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • Ac-dc power conversion
  • Electrolytic capacitor less
  • LED driver
  • Ripple power decoupiing

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