臺灣博碩士論文加值系統

本論文提出一種可並聯運轉之模組化最大必v追蹤器。並聯運轉可降低必v元件的電流應力，使設計上更為簡易。模組化的架構讓每一模組可隨意替換，增加系統可靠度。本論文提出的電路主要包含兩個部分，分別是最大必v追蹤控制電路與主從控制電路。最大必v追蹤控制採用擾動與觀察法，主從控制電路偵測流進模組的電流，並由流過最多電流的模組作為主模組，專門負責最大必v追蹤，並送出本身的電流訊號與最大必v追蹤控制訊號給其餘從模組，而從模組接收主模組之控制訊號，並根據主模組的電流訊號進行電流調控，讓主從模組的電流差距維持在一定範圍內，確保各模組不會因電路參數不同，而造成電流差異過大。為了確定此電路的可行性，將以PSpice模擬與硬體電路實作驗證。

The main objective of this thesis is to design and implement a modular maximum power point tracker (MPPT). Due to each MPPT module only supplying partial load current, the current stress of switching components can be reduced relatively. In addition, when one of modules fails, the rest of modules can still continuously supply load current to keep the system normally operated. Each MPPT module mainly contains two parts, the MPPT control circuit and the master-slave control circuit. The MPPT control circuit uses "Perturb and Observe" technique to track the maximum power point of the solar cell array. The master-slave control circuit detects the magnitude of currents flowing through modules. The module which has the highest current would be assigned as the master module, performing MPPT control. The other slave modules adjust the current flow through themselves to achieve current distribution between each module. Simulated results and experimental results will be presented to verify the validity of the proposed circuit.

中文摘要 i
英文摘要 ii
目錄 iii
圖目錄 v
表目錄 vii
第一章 緒論 1
1-1 研究動機與目的 1
1-2 論文大綱 3
第二章 太陽光電板簡介 4
2-1 太陽光電池的種類 4
2-1-1 單晶矽太陽光電池 5
2-1-2 多晶矽太陽光電池 6
2-1-3 非晶矽太陽光電池 6
2-1-4 III-V族太陽光電池 7
2-1-4 II-VI族太陽光電池 7
2-2 太陽光電板特性介紹 8
2-3 最大必v追蹤法介紹 14
2-3-1 擾動與觀察法 14
2-3-2 增量電導法 15
2-3-3 開路電壓法與短路電流法 17
2-3-4 直線近似法 17
2-3-5 負載電壓或電流最大化法 18
第三章 電路架構與設計 20
3-1 電路架構概觀 20
3-2 電力級電路設計 24
3-2-1 升壓型轉換器簡介 24
3-2-2 主要元件設計與分析 25
3-3 最大必v追蹤控制電路 28
3-4 主從控制電路 34
第四章 模擬與實測結果 40
4-1 實驗架構介紹 40
4-2 單模組最大必v追蹤測試 42
4-3 雙模組並聯運轉測試 45
4-4 系統熱源分佈 50
第五章 結論與未來研究方向 52
5-1 結論 52
5-2 未來研究方向 52
參考文獻 54

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