- 學位論文
太陽能發電系統之無光源感測器的二維追日系統設計與實現
Design and Implementation for Two-dimensional Solar Tracking Systems
摘要
本文旨在無需光源感測器的情況下，探討太陽能發電系統追蹤光源以達到最大發電效率。此方法的優點為直接由太陽能板的發電狀態來判斷光源所在方位，能夠據實指向最佳發電方位。同時本系統機構輕巧簡潔，具有二維的追蹤自由度。為達到自動追蹤陽光使得太陽能板隨時正對於太陽，我們設計模糊控制器，動態地調控步進馬達控制雙軸轉動，提升系統的發電效率。設計過程中並考慮降低外部環境干擾對系統所造成的影響，減少系統發生誤判時所耗損的能量。為了有效的儲存太陽能板產生的電能，本文也提出分段式儲能系統，並分有主電源與副電源的設計，副電源由超級電容與鋰電池所組成，之間具有互相輔助和切換的機制，能夠確保系統的穩定性。本研究使用LabVIEW以實現模糊控制器，實際製作太陽能發電系統與儲能系統，最終實驗結果顯示本文所提出之理論與設計，具有相當的準確性，能夠達到提升太陽能系統發電效能之目的。
並列摘要
This thesis aims without light sensor, to explore the solar power system to track the light source to achieve maximum power generation efficiency. The advantage of this method is to determine the sun direction directly from the power generation state of the solar panels. Hence, the solar panel can truly point to the direction with maximum power generation. The mechanism of this system is compact, lightweight, and with two-dimensional tracking degrees of freedom. In order to automatically track the sun and make solar panels face the sum at any time, we design the fuzzy controller such that the two rotational axes can be well regulated by stepping motors. The impact coming from external environmental disturbance is considered in the design process. Then, the energy loss due to incorrect reaction can be reduced. For effective storage of solar electricity, we also propose a segmented storage system. According to its main power and sub-power supply design. The latter is composed of super capacitors and lithium batteries, with supporting each other. We use LabVIEW to implement the fuzzy controller and carry out the solar power system and the energy storage system. The final experimental results show that the theory and design of the proposed method have considerable accuracy and can enhance the performance of solar systems.