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Title: Design of an LED thermal system for automotive systems
Authors: Kwok, KF
Divakar, BP
Cheng, KWE 
Issue Date: 2009
Source: PESA 2009 : International Conference on Power Electronic Systems and Applications : 20th-22nd May 2009, p. [1-4]
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.
Keywords: LED
Thermal design
Luminous efficiency
Constant current power
Vehicle lighting
Publisher: Power Electronics Research Centre, The Hong Kong Polytechnic University
ISBN: 978-988-17471-3-6
Rights: Copyright © The Hong Kong Polytechnic University 2009.
Appears in Collections:Conference Paper

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