摘要
综合分析了新一代电光源LED的光-电-热理论和现有的相关模型,针对Hui等提出的模型,采用数学推导、仿真和实验相结合的方法,分析了LED封装模组在散热片温度恒定时,其正向电流和输入功率之间存在的一定线性关系。从电路驱动控制角度,进一步推导出一种简化变量的新型LED光电热模型。该模型的变量采用易于检测的LED散热片温度和易于控制的LED正向电流。通过两种典型LED封装模组的光学实验验证了所提模型的可行性。与Hui等的LED光电热模型相比,该模型具有简单、方便电路驱动控制的特点,可为LED照明系统的设计,建立优良光学特性的LED驱动电源控制策略和驱动电路调光控制技术提供理论依据。
The existing photo-electro-thermal theory and models of LED are analyzed. Based on the model proposed by Hui et al., combining mathematical derivations, simulations and experiments, a linear relationship between the positive input current and input power is studied when the LED package module is at a constant temperature of heatsink. From the circuit control strategy, a novel photo-electro-thermal LED model with simplified variables is proposed. The temperature of heatsink and input current are the two variables of this model, which are easy to measure and control. The feasibility of the proposed model is verified by optical experiments on two typical LED package modules. Compared with the model proposed by Hui et al., the model is simple and convenient to perform circuit drive control. It is helpful for the design of the LED lighting system and the establishment of LED drive power control strategy with excellent optical properties, providing a theoretical basis for LED dimmer control technology.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2013年第5期222-228,共7页
Acta Optica Sinica
基金
国家自然科学基金(60572016)
福建省自然科学基金(2011J01294)资助课题
关键词
光电子学
光效
光-电-热理论
正向电流
散热片温度
optoelectronics
luminous efficiency
photo-electro-thermal theory
forward current
temperature ofheatsink
