Title :
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
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;
Journal_Title :
Electron Devices, IEEE Transactions on
DOI :
10.1109/TED.2013.2282901
