A current compensator for mitigating the influence of long cable inductance between the LED driver and the 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 publicationECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781509007370
Publication statusPublished - 13 Feb 2017

Conference

Title2016 IEEE Energy Conversion Congress and Exposition, ECCE 2016
PlaceUnited States
CityMilwaukee
Period18 - 22 September 2016

Abstract

It is sometimes unavoidable to use a long cable to connect the light source to the driver when they are placed far apart in large scale LED lighting installation. Since LED driver typically delivers pulse-width-modulated current pulses, the long cable inductance will delay the rate of rise of the current pulses and will also cause negative off-state voltage across the light source, reducing luminous output and vitiating the life expectancy of the light source. This paper will present a current compensator, which can mitigate the distortion of the current pulses caused by the long cable. The concept is based on recycling the energy stored in the cable at the end of a current pulse and then driving the light source synchronously with the driver at the beginning of the next current pulse. A prototype for a 12V, 4.5A LED driver has been built and evaluated. 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 current compensator for mitigating the influence of long cable inductance between the LED driver and the light source. / Zhou, Rui; Yeung, Ryan Shun-Cheung; Chung, Henry Shu-Hung; Chan, John Yau-Chung; Tse, Norman Chung-Fai.

ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings. Institute of Electrical and Electronics Engineers Inc., 2017. 7854672.

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