摘要
根据LED电路等效模型和光、电、热相互作用原理,研究了LED正向电压Ud(Tj,Id)数学模型。通过将结温Tj等温度变量转换为易于控制的电学量,得到以正向电压Ud与正向电流Id为变量的LED发光系数ηopt(Ud,Id)数学模型,和光通量φ(Ud,Id)光电数学模型。通过对两种不同LED芯片的光学实验,验证了所提光电模型的正确性。
According to the equivalent model of LED circuit and the principle of interaction of light,electricity and heat,this paper studied on the mathematical model of LED forward voltage Ud(Tj,Id).By converting the temperature variables such as the junction temperature Tj into electrical quantity which were easy to control,the mathematical model of LED illuminance coefficientηopt(Ud,Id)and the photoelectric model of luminous fluxφ(Ud,Id)with forward voltage Ud and forward current Id as variables were obtained.The optical experiment of two different LED chips is used to verify the correctness of the proposed photoelectric model.
作者
何杨
徐玉珍
HE Yang;XU Yu-zhen(College of Electrical Engineering and Automation,Fuzhou University,Fuzhou 350108,China)
出处
《电工电气》
2019年第12期5-9,21,共6页
Electrotechnics Electric
关键词
LED光电模型
正向电压
正向电流
LED photoelectric model
forward voltage
forward current
