整合實驗、簡易共軛梯度法及多重物理量分析之高功率LED陣列熱傳最佳化研究

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題名:
整合實驗、簡易共軛梯度法及多重物理量分析之高功率LED陣列熱傳最佳化研究
著者: 黃志平; Huang, Chih-ping
林大偉; David T.W. Lin; 機電系統工程研究所碩士班
主題: 高功率LED陣列; 最佳化設計; 熱集中; 簡易共軛梯度法; High Power LED Array; Optimal Design; Heat Concentration; SCGM
描述: 中文摘要LED (Light Emitting Diode)是一種節約能源的環保照明光源，比起傳統照明光源具有省電及壽命長等優點。事實上，LED約有15%~30%可轉換成可見光，其餘70%~85%轉換成熱。隨著發光二極體發光效率的提升，LED逐漸受到照明市場的青睞與重視。LED具有體積小、壽命長、發光效率佳、省電、環保及啟動速度快等優點，應用上越來越廣泛；除了交通號誌與大型戶外看板外，LED也逐漸在LED背光模組及固態照明等應用中佔有一席之地。本研究之主要目的在探討高功率發光二極體陣列之熱集中現象，以達到LED陣列之最佳化設計。因為高功率LED陣列的熱集中現象會影響LED壽命、穩定性及可靠度，因此，高功率LED之陣列散熱需求變成提升使用效率之重要條件。本研究以實驗驗證結合簡易共軛梯度法(Simplified Conjugate Gradient Method, SCGM)，多重物理量軟體(COMSOL)之模擬，提出一種整合實驗及模擬的最佳化方法，以獲得最佳化設計之高功率LED陣列。研究的結果顯示，所提出的方法可以使高功率LED陣列，達到溫度均勻分佈之最佳化設計，對於高功率LED陣列之散熱效益有更進一步的助益，預期本研究之方法將對於解決現今與未來之高功率LED陣列高發熱量問題有所助益，以協助模組廠商能以簡易之方法設計高功率LED陣列，來達到節能減碳暨高效能之要求。
AbstractLED is a green light source that has more energy saving and longer lifetime than the traditional light. In fact, the input power of LED is about 15% to 30% converted into visible light, the remaining power is about 70% to 85% converted into heat. Because of the greater efficiency of LED, the LED''s market has been favored gradually. The advantages of LED are small size, long lifetime, good luminous efficiency, energy saving, environmental protection and faster startup. It is applied to the different field, likes traffic signal and large outdoor billboards, and LED plays an important role in the LED backlight and solid-state lighting applications.The purpose of this study is to investigate the thermal concentration of high power LED array to achieve optimal design. Because the high temperature will occur in high power LED arrays, which lead to the phenomena of heat concentration and non-uniform temperature will affect the lifetime, stability, and reliability of the LED. Consequently, the heat dissipation of high power LED becomes an important condition to promote the usage of efficiency.This research uses the experiments combining the simplified conjugate gradient method (SCGM) and the multiple physics software (COMSOL) to propose an optimal method. The results show that this proposed method can design high power LED arrays to achieve the best uniform temperature distribution. We are looking forware to the proposed method is helpful for solving the heat problem of high power LED array.
碩士
建立日期: 2010
格式: 121 bytes
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語言: 中文
識別號: http://nutnr.lib.nutn.edu.tw/handle/987654321/2029
資源來源: NUTN IR

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整合實驗、簡易共軛梯度法及多重物理量分析之高功率LED陣列熱傳最佳化研究

黃志平; Huang, Chih-ping 林大偉; David T.W. Lin; 機電系統工程研究所碩士班 2010

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