Design Methodology for Light-Emitting Diode Systems by Considering an Electrothermal Model

Author

Bender, Vitor C. ; Iaronka, Odirlan ; Dotto Vizzotto, William ; Dalla Costa, Marco A. ; Nederson do Prado, Ricardo ; Bandeira Marchesan, Tiago

Author_Institution

Electron. Ballast Res. Group, Fed. Univ. of Santa Maria, Santa Maria, Brazil

Volume

60

Issue

11

fYear

2013

fDate

Nov. 2013

Firstpage

3799

Lastpage

3806

Abstract

The knowledge about thermal, electrical, and photometrical characteristics of Light-Emitting Diodes (LEDs) is essential to achieve a good performance to the lighting system. This paper presents a methodology for designing LED systems. The main purpose is to provide an optimal operating point, considering the electrothermal design to achieve the maximum luminous flux for a given LED system. Based on two design routines, the proposed methodology brings the possibility to consider driver output current, heatsink size, and LED junction temperature in the system design. A mathematical analysis taking into account an LED electrothermal model is presented. Computational fluid dynamics simulation employing finite element method and experimental results validate the proposed methodology.

Keywords

computational fluid dynamics; finite element analysis; heat sinks; light emitting diodes; LED junction temperature; LED systems; computational fluid dynamics simulation; design methodology; driver output current; electrothermal design; electrothermal model; finite element method; heatsink size; light-emitting diode systems; mathematical analysis; maximum luminous flux; optimal operating point; Heating; Junctions; Light emitting diodes; Lighting; Resistance; Temperature; Temperature measurement; Computational fluid dynamics; electrothermal model; finite element method; heat transfer; light-emitting diodes; thermal design;

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/TED.2013.2282901

Filename

6620953