A switched-capacitor-based current compensator for mitigating the effect of long cable connecting between LED driver and light source

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)

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Detail(s)

Original languageEnglish
Title of host publication2017 IEEE Applied Power Electronics Conference and Exposition, APEC 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2412-2419
ISBN (Electronic)9781509053667
ISBN (Print)9781509053667
Publication statusPublished - 17 May 2017

Conference

Title32nd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2017
PlaceUnited States
CityTampa
Period26 - 30 March 2017

Abstract

In large-scale LED lighting installation, it is sometimes unavoidable to use a long cable to connect light sources to LED drivers. Since LED drivers deliver pulse-width-modulated current, such long cable inductance effect prolongs the rise time of the current pulse and hence adversely affects the luminous output. In addition, the energy stored in cable will be discharging to the LEDs during the off state, giving rise a negative voltage across the terminals of light source, and eventually shortening the lifetime of the light sources. A switched-capacitor-based current compensator is proposed to suppress the current pulse distortion and maintain the LED voltage positive. The idea is based on recycling the energy stored in the cable with a switched capacitor network at the end of a current pulse, and then drives the light source synchronously with the driver at the beginning of the next current pulse. Topological states, operations and experimental results will be given.

Research Area(s)

  • Cable length effect, DC-DC power conversion, LED lighting, Lighting control

Citation Format(s)

A switched-capacitor-based current compensator for mitigating the effect of long cable connecting between LED driver and light source. / Yeung, Ryan Shun-Cheung; Chan, John Yau-Chung; Zhou, Rui; Chung, Henry Shu-Hung; Tse, Norman Chung-Fai.

2017 IEEE Applied Power Electronics Conference and Exposition, APEC 2017. Institute of Electrical and Electronics Engineers Inc., 2017. p. 2412-2419 7931037.

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)