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http://dx.doi.org/10.6113/JPE.2016.16.2.815

An Estimation Method for the Efficiency of Light-Emitting Diode (LED) Devices  

Tao, Xuehui (Department of Signal and Control Engineering, Soochow University)
Yang, Bin (Department of Signal and Control Engineering, Soochow University)
Publication Information
Journal of Power Electronics / v.16, no.2, 2016 , pp. 815-822 More about this Journal
Abstract
The efficiency of light-emitting diode (LED) devices is a significant factor that reflects the capability of these devices to convert electrical power into optical power. In this study, a method for estimating the efficiency of LED devices is proposed. An efficiency model and a heat power model are established as convenient tools for LED performance evaluation. Such models can aid in the design of LED drivers and in the reliability evaluation of LED devices. The proposed estimation method for the efficiency and heat power of LED devices is verified by experimentally testing two types of commercial LED devices.
Keywords
Efficiency; Heat power; Junction temperature; Light-emitting diode;
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