一种便于电源驱动控制的LED光电模型
何杨，徐玉珍
（福州大学 电气工程与自动化学院，福建 福州 350108）
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。
关键词：LED光电模型；正向电压；正向电流
中图分类号：TN312+.8 文献标识码：A 文章编号：1007-3175(2019)12-0005-05
An LED Photoelectric Model for Power Driving Control
HE Yang, XU Yu-zhen
（College of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350108, China）
Abstract: 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 coefficient ηopt (Ud, Id) and the photoelectric model of luminous flux φ (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.
Key words: LED photoelectric model; forward voltage; forward current
参考文献
[1] 童敏，邵嘉平. 照明用LED芯片与封装器件发展概述[J]. 照明工程学报，2017(4)：130-133.
[2] 胡进，吕征宇，林辉品，等. LED照明应用现状特征及驱动技术发展综述[J]. 电源学报，2018(1)：135-144.
[3] HADIS M A, COOPER P R, MILWARD M R, et al. Development and application of LED arrays for use in phototherapy research[J].Journal of Biophotonics，2017，10(11)：1514-1525.
[4] 阮军. 多维度发掘LED产业新机遇[J]. 照明工程学报，2016，27(6)：1.
[5] NEGREA C, SVASTA P, RANGU M.Electro-thermal modeling of power LED using SPICE circuit solver[C]//IEEE 2012 35th International Spring Seminar on Electronics Technology，2012：329-334.
[6] HUI S Y, QIN Y X.A General Photo-Electro-Thermal Theory for Light Emitting Diode(LED)Systems[J].IEEE Transactions on Power Electronics，2009，24(8)：1967-1976.
[7] SHAILESH K R, KURIAN C P, KINI S G.Junction temperature measurement of a LED street light using forward voltage method[C]//IEEE International Conference on Advances in Electronics，2014：1-6.
[8] 张波，俞安琪. LED结温与光色参数的关系及结温极限[J]. 照明工程学报，2018(1)：29-33.
[9] 毛兴武，张艳雯，周建军，等. 新一代绿色光源LED及其应用技术[M]. 北京：人民邮电出版社，2008.
[10] HUI S Y, CHEN Huanting, TAO Xuehui. An Extended Photoelectrothermal Theory for LED Systems: A Tutorial From Device Characteristic to System Design for General Lighting[J].IEEE Transactions on Power Electronics，2012，27(11)：4571-4583.
[11] 汪延明，徐林炜，谈健，等. InGaN基发光二极管光效下降效应研究进展[J]. 激光与光电子学进展，2012，49(12)：15-21.
