- 學位論文
太陽能最大功率追蹤之模糊控制器設計
Design of Fuzzy Controller for Photovoltaic Maximum Power Tracking Control
摘要
由於近年來國際石油及燃料價格不斷攀升，使各國已經開始重視綠色能源的發展，而目前太陽能發電效率普遍都不高，所以如何增加太陽能發電系統的發電效率是值得研究。由於太陽光電池的電壓與電流並不是線性關係，且在不同的環境狀態條件下，其工作曲線都不一樣。為了提高太陽能發電系統的效率，所以需要依靠DC-DC直流轉換器和最大功率追蹤控制，使太陽能發電系統得到穩定的輸出。 本論文硬體架構是利用Matlab Simulink函數方塊撰寫程式，使用仿真科技公司的系統控制卡(Advantech PCI-1716)，將偵測到的電壓、電流、照度、溫度的資料傳送至電腦端儲存，而在電腦端的Matlab內建的Simulink函數方塊裡進行資料顯示、分析以及送出控制訊號。 本論文以擾動觀察法(Perturb and Observe,P&O)為基礎設計一個模糊控制器，運用模糊控制本身可以簡化系統的複雜度，在非線性的系統仍然可以做出迅速的判斷。從本文所實驗結果驗證，確實可以看出能使太陽能發電系統得到穩定輸出，致使整體效率提高。
並列摘要
The energy shortages have leading international oil and fuel prices rising, because of it many countries have begun to attach importance to the development of green energy in recent years. Therefore, it is worth studying how to increase the type of power generation efficiency of photovoltaic system, when the solar power generation efficiency is not generally high now. In addition, the relationship between solar cell and voltage current is not a linear, and their working curves will not be the same in a different state of the environment conditions. In order to improve the efficiency of the photovoltaic system and make it stable output, it needs to rely on DC-DC buck converter and the tracking control of maximum power. The hardware architecture of this article is Matlab Simulink, a function box programming. A system control card (Advantech PCI-1716) from Jubilee Technology Co., which save the detected voltage, current, illumination, temperature in the Matlab built in Simulink function box in computer and display, analysis, and send control signals from it. This article is using perturb and observe (P&O), for the based design of a fuzzy controller. This fuzzy control can simplify the complexity of the system, even the nonlinear system and the time-varying have unknown system of mathematical models, it still can made quickly judgment. According to the experiment results, a stable output photovoltaic system made high efficiency.