Chromatic, Photometric and Thermal Modeling of LED Systems With Nonidentical LED Devices
Chromatic, Photometric and Thermal Modeling of LED Systems With Nonidentical LED Devices
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DOI：
10.1109/tpel.2014.2302453
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发表时间：
2014-01
影响因子：
6.7
通讯作者：
Huanting Chen;D. Lin;Siew-Chong Tan;R. Hui
中科院分区：
文献类型：
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作者：
Huanting Chen;D. Lin;Siew-Chong Tan;R. Hui
随着基于不同色温的LED器件的新的混色LED系统的出现，对用于具有不同LED器件的LED系统的新的建模技术的需求变得迫在眉睫。本文提出了一种建模技术的LED系统与LED阵列包括不相同的LED器件，具有不相同的光-热-电性能。基于一个通用的三维光-电-热LED节点模型，不同类型的LED器件可以根据其系统结构和设计以各种阵列形式排列。通过将系统矩阵与相关色温预测相关联，所提出的建模技术提供了LED系统的温度分布、光通量和相关色温的准确预测。使用红外成像系统和带积分球的分光光度计测量了LED系统的温度分布和光输出。建模技术已成功地证明和实验验证了几个LED系统，包括不相同的LED器件。它作为一种建模工具，特别适用于研究基于不同类型LED器件的新型混色LED系统。
With the emergence of new color-mixing LED systems based on LED devices of different color temperatures, the need for a new modeling technique for LED systems with nonidentical LED devices becomes imminent. This paper presents a modeling technique for LED systems with LED arrays comprising nonidentical LED devices that have nonidentical optical-thermal-electrical properties. Based on a general 3-D photo-electro-thermal LED node model, LED devices of different kinds can be arranged in various array forms according to their system construction and design. By linking the system matrix to the correlated-color-temperature prediction, the proposed modeling technique provides an accurate prediction of the temperature distribution, luminous flux, and correlated color temperature of the LED systems. The temperature distribution and light output of the LED systems have been measured using an infrared imaging system and a spectrophoto-colorimeter with an integrating sphere. The modeling technique has been successfully demonstrated and experimentally verified on several LED systems comprising nonidentical LED devices. It is particularly useful as a modeling tool to study new color-mixing LED systems based on different types of LED devices.