2012-01-012024-05-18https://scholars.lib.ntu.edu.tw/handle/123456789/711620摘要:近幾年來,降低溫室效應和氣候改變所帶來的負面效應,漸漸形成各國政府與研究 單位密切關注的問題。許多國家已經制定能源政策和計畫來處理多樣化能源、供應防 護、經濟效率及環境保護。當今使用太陽能電池等可再生能源可充分地減少二氧化碳排 放物。太陽能電池是一種透過半導體直接把光能轉變成電力。使太陽能電池成為一種可 靠的能源,並且可有效率地減緩溫室效應對地球氣候的影響。 太陽能電池能源在近年內已經引起許多研究成果,由於它的獨特的特性和多用途的 應用。不過,太陽能電池陣列的能量變換效率仍然是低的。因此,仍是值得去改進太陽 能電池陣列的性能並且更進一步去研究能源轉換過程和能源損耗的議題。為了達到最大 的使用效率,應用最大功率點追蹤控制技術於由太陽能電池陣列所提供動力的系統裡是 必要的。在本研究中,我們藉由使用半導體理論模型發展一個簡化的控制模型(p-n 接面 復合模型),並用來直接估計最大功率點且穩定功率追蹤。透過p-n 接面復合模型可成 功用來描述半導體系統的線性和非線性溫度相依行為。本研究將藉由使用p-n 接面復合 模型,估計太陽能電池的最大功率點,並搭配擾動觀察法功率追蹤模型維持最大功率輸 出。此外,並進一步結合無線感測器網路監測技術,建構一整合能源管理、最佳化系統 與監測系統之太陽能發電系統,以建立知識庫系統提供相關資料分析依據。<br> Abstract: In recent years, a critical issue has been emerged: how to reduce negative effects brought by global warming and climate change. Many countries have initiated energy policies and programs to deal with energy diversification, security of supply, economic efficiency, and environmental protection. In most cases the use of renewable energy such as photovoltaics (PVs) is able to considerably reduce certain carbon dioxide emissions. PV cells directly convert light energy into electric power through semiconductors. These merits make PVs a reliable energy source and an efficient mitigation lever against global warming. In agriculture, PV cells have also played a promising role. Many studies focusing on plant factory have been applied them to the research settings. PV energy has attracted intensive research effort in recent years, due to its unique properties and versatile applications. However, the energy-conversion efficiency of the PV arrays is still low. Therefore, it is worthy to pay much attention to improve the performance of PV arrays and to further investigate the energy conversion process of the PV arrays and related energy loss issues. In order to achieve maximum utilization efficiency, it is essential to integrate the maximum power point tracking (MPPT) control technique into the systems powered by the PV arrays. In this study, we have developed a simplified control model (p-n junction recombination model) to directly estimate the maximum power point and keep power tracking by using the semiconductor theory. Furthermore, the p-n junction recombination model has successfully described the linear and the nonlinear temperature dependent behaviors of semiconductor systems. Based on the p-n junction recombination model, the power point of the PV arrays with maximum utilization efficiency can be simply evaluated, and the power tracking with a perturbation observation method is remained. Therefore, in this study, we utilize the p-n junction recombination model to evaluate the maximum power point and maintain maximum output power with the perturbation and observation method. Furthermore, combining with wireless sensor network monitoring technologies, this study will establish an integrated solar power system capable of energy management, system optimization, and environmental monitoring to create a knowledge-based system which can provide important information for further analysis.太陽能電池最大功率點追蹤法則無線感測器網路單晶片控制單元Photovoltaic (PV) cellmaximum power point tracking (MPPT)wireless sensor networkmicro controller unit太陽光電系統之高效率轉能利用及監控技術研發(I)