PolyU IR
 

PolyU Institutional Repository >
Electrical Engineering >
EE Conference Papers & Presentations >

Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/1594

Title: Design of an LED thermal system for automotive systems
Authors: Kwok, K. F.
Divakar, B. P.
Cheng, K. W. Eric
Subjects: LED
Thermal design
Luminous efficiency
Constant current power
Vehicle lighting
Issue Date: 2009
Publisher: Power Electronics Research Centre, The Hong Kong Polytechnic University
Citation: 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.
Rights: Copyright © The Hong Kong Polytechnic University 2009.
Type: Conference Paper
URI: http://hdl.handle.net/10397/1594
ISBN: 978-988-17471-3-6
Appears in Collections:EE Conference Papers & Presentations

Files in This Item:

File Description SizeFormat
PESA_2009_K210509127.pdf614.93 kBAdobe PDFView/Open



Facebook Facebook del.icio.us del.icio.us LinkedIn LinkedIn


All items in the PolyU Institutional Repository are protected by copyright, with all rights reserved, unless otherwise indicated.
No item in the PolyU IR may be reproduced for commercial or resale purposes.

 

© Pao Yue-kong Library, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
Powered by DSpace (Version 1.5.2)  © MIT and HP
Feedback | Privacy Policy Statement | Copyright & Restrictions - Feedback