Thermal management of power LED system

Author

Akca, Hakan ; Yasa, Yusuf ; Ayaz, Ramazan ; Durusu, Ali ; Ajder, Ali ; Nakir, Ismail ; Tanrioven, Mugdesem

Author_Institution

Dept. of Electr. Eng., Yildiz Tech. Univ., Istanbul, Turkey

fYear

2014

fDate

19-22 Oct. 2014

Firstpage

760

Lastpage

764

Abstract

LEDs are used in many areas today. Street lighting is one of them and high-power LEDs are utilized in this area. Electrical energy is converted into light with an efficiency in 10-25% range. The rest is converted into heat. The generated heat is largely caused from LED chip. Furthermore, Driver circuit would also causes heat rise. Removing of this heat from the system is important in order to LED system efficiency because increasing of temperature causes a reduction of luminous flux. Excellent thermal management plays a significant role in terms of efficiency, reliability and durability. In this study, losses are caused from the LED chip and the heat sink which are part of the LED lighting systems are examined. These elements are thermally analyzed. The impacts of these losses on efficiency will be presented.

Keywords

LED lamps; driver circuits; heat sinks; losses; street lighting; thermal management (packaging); LED chip; driver circuit; electrical energy; heat removal; heat sink; high-power LED system efficiency; losses; luminous flux reduction; street lighting; thermal management; Heat sinks; Heating; Light emitting diodes; Temperature; Thermal analysis; Thermal resistance;

fLanguage

English

Publisher

ieee

Conference_Titel

Renewable Energy Research and Application (ICRERA), 2014 International Conference on

Conference_Location

Milwaukee, WI

Type

conf

DOI

10.1109/ICRERA.2014.7016487

Filename

7016487