Design of an LED thermal system for automotive systems

K. F. Kwok, B. P. Divakar, Ka Wai Eric Cheng

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

2 Citations (Scopus)

Abstract

The paper examines the high power Light Emitted diode (LED) and the hear distribution of the heat sink. Beside we also study the relationship between temperature and the current on the LEDs luminous efficiency. The temperature rise to over the limit level that the luminous efficiency will decrease rapidly. The current increase will cause the nonequilibrium electron diffuse out of the potential wall and will increase the temperature, so as to decrease luminous efficiency and the LEDs life [1]. Enhancing the heat manage of LEDs that can improve the luminous efficiency. Thermal design examines by using the thermal analysis. Finally we propose the electrical circuit to drive the LEDs in constant current power to maintain the temperature more constant of LEDs.
Original languageEnglish
Title of host publication2009 3rd International Conference on Power Electronics Systems and Applications, PESA 2009
Publication statusPublished - 4 Nov 2009
Event2009 3rd International Conference on Power Electronics Systems and Applications, PESA 2009 - Hong Kong, Hong Kong
Duration: 20 May 200922 May 2009

Conference

Conference2009 3rd International Conference on Power Electronics Systems and Applications, PESA 2009
Country/TerritoryHong Kong
CityHong Kong
Period20/05/0922/05/09

Keywords

  • Constant current power
  • LED
  • Luminous efficiency
  • Thermal design
  • Vehicle lighting

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this