Four-Parameter Taylor Series-Based Light-Emitting-Diode Model

Ray-Lee Lin, Jhong Yan Tsai, Jose Marcos Alonso, David Gacio

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

This paper presents a light-emitting-diode (LED) model based on the four-parameter Taylor series to describe the V - I characteristic of the LED at different junction temperatures. Therefore, in order to precisely model the LED nonlinear characteristics at different junction temperatures, an improved Taylor series-based LED model is proposed according to the four available parameters: 1) maximum operating point; 2) rated operating point; 3) knee point; and 4) temperature coefficient obtained from the LED V - I curves. Furthermore, in order to perform the dc and small-signal simulation and analyses of the LED drivers at different junction temperatures, the proposed model can be used to derive the LED dc and small-signal equivalent resistances at different junction temperatures. Finally, the measured results are compared with the modeled V - I curves, dc equivalent resistances, and small-signal equivalent resistances of the experimental LED at different junction temperatures.

Original languageEnglish
Article number7081503
Pages (from-to)581-588
Number of pages8
JournalIEEE Journal of Emerging and Selected Topics in Power Electronics
Volume3
Issue number3
DOIs
Publication statusPublished - 2015 Sep 30

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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