一種便于電源驅(qū)動(dòng)控制的LED光電模型
何楊，徐玉珍
（福州大學(xué) 電氣工程與自動(dòng)化學(xué)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(xué)模型。通過將結(jié)溫Tj等溫度變量轉(zhuǎn)換為易于控制的電學(xué)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(xué)模型，和光通量φ（Ud，Id）光電數(shù)學(xué)模型。通過對(duì)兩種不同LED芯片的光學(xué)實(shí)驗(yàn)，驗(yàn)證了所提光電模型的正確性。
關(guān)鍵詞：LED光電模型；正向電壓；正向電流
中圖分類號(hào)：TN312+.8 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：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(xiàn)
[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(xué)報(bào)，2017(4)：130-133.
[2] 胡進(jìn)，呂征宇，林輝品，等. LED照明應(yīng)用現(xiàn)狀特征及驅(qū)動(dòng)技術(shù)發(fā)展綜述[J]. 電源學(xué)報(bào)，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(jī)遇[J]. 照明工程學(xué)報(bào)，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(jié)溫與光色參數(shù)的關(guān)系及結(jié)溫極限[J]. 照明工程學(xué)報(bào)，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(yīng)用技術(shù)[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(yīng)研究進(jìn)展[J]. 激光與光電子學(xué)進(jìn)展，2012，49(12)：15-21.
