一種便于電源驅(qū)動控制的LED光電模型
何楊，徐玉珍
（福州大學 電氣工程與自動化學院，福建 福州 350108）
摘 要：根據(jù)LED電路等效模型和光、電、熱相互作用原理，研究了LED正向電壓Ud（Tj，Id）數(shù)學模型。通過將結溫Tj等溫度變量轉(zhuǎn)換為易于控制的電學量，得到以正向電壓Ud與正向電流Id為變量的LED發(fā)光系數(shù)ηopt（Ud，Id）數(shù)學模型，和光通量φ（Ud，Id）光電數(shù)學模型。通過對兩種不同LED芯片的光學實驗，驗證了所提光電模型的正確性。
關鍵詞：LED光電模型；正向電壓；正向電流
中圖分類號：TN312+.8 文獻標識碼：A 文章編號：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
參考文獻
[1] 童敏，邵嘉平. 照明用LED芯片與封裝器件發(fā)展概述[J]. 照明工程學報，2017(4)：130-133.
[2] 胡進，呂征宇，林輝品，等. LED照明應用現(xiàn)狀特征及驅(qū)動技術發(fā)展綜述[J]. 電源學報，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] 阮軍. 多維度發(fā)掘LED產(chǎn)業(yè)新機遇[J]. 照明工程學報，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] 張波，俞安琪. LED結溫與光色參數(shù)的關系及結溫極限[J]. 照明工程學報，2018(1)：29-33.
[9] 毛興武，張艷雯，周建軍，等. 新一代綠色光源LED及其應用技術[M]. 北京：人民郵電出版社，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，徐林煒，談健，等. InGaN基發(fā)光二極管光效下降效應研究進展[J]. 激光與光電子學進展，2012，49(12)：15-21.
