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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/62223
標題: | 太陽能電池模組之最大功率點估算與追蹤法則的特性分析、實現與應用之研究 On maximum power point estimation and tracking method for photovoltaic modules: characteristic analysis, implementation, and application |
作者: | Jen-Cheng Wang 王人正 |
指導教授: | 江昭皚 |
關鍵字: | 最大功率點,太陽光電陣列,p-n接面半導體,太陽能電池, Maximum power point (MPP),photovoltaic (PV) arrays,p-n junction semiconductor,solar cells, |
出版年 : | 2013 |
學位: | 博士 |
摘要: | 有關太陽光電陣列最大功率點及效能的定量資訊對於決定與控制它們的操作是至關重要的,但這是很難透過直接測量來取得這樣的資訊。太陽光電陣列表現出極端非線性電流–電壓特性並隨著與各個太陽能有關的許多複雜因素而變化,這使得難以確保可最佳地利用可用的太陽能並實現即時最大功率輸出。從上述提到的缺點可得知,在各種變化條件下,如照射強度、溫度、動態電阻、入射角和部分遮陰照射條件,傳統方法很難去快速地獲得太陽能電池模組的最大功率點並產生功率以及去評估太陽能模組的性能。為了促進最大功率點追蹤控制演算法的效率,在本論文中吾人已經開發出新穎的、簡單且直接預測並具有低計算負擔的方法。這些方法是根據在太陽能電池的p-n接面半導體理論所發展出來的。太陽能模組的最大功率點溫度和照射強度特性亦被考慮在內。這些方法不僅可以減少追蹤時間和能量損耗,而且還可提高功率利用率。實驗結果證實這些方法可以用來最佳化太陽能模組的效能而且可在實際操作上將此整合進太陽光電系統的最大功率點控制模型中。 Quantitative information regarding the maximum power point (MPP) and performance of photovoltaic (PV) arrays is crucial for determining and controlling their operation, yet it is difficult to obtain such information through direct measurements. PV arrays exhibit an extremely nonlinear current-voltage (I–V) characteristic that varies with many complex factors related to the individual cells, which makes it difficult to ensure an optimal use of the available solar energy and to achieve maximum power output in real time. Aside from the shortcomings mentioned above, it is impossible for the conventional methods to quickly acquire the MPPs for the power generated by PV modules and evaluate the performance of PV modules under various conditions, such as the irradiation intensity, temperature, dynamic resistance, incident angle, and partially shaded irradiation conditions. To facilitate the efficiency of the MPPT algorithm, we have developed the new, simple, and direct-prediction method with a low calculation burden in this study. These proposed methods were developed based on the p-n junction semiconductor theory of solar cells. Both the temperature and irradiation intensity characteristics of the MPP of PV modules are taken into account. These proposed methods are not only able to decrease tracking time and energy loss, but also increase power utilization. The experimental results are demonstrated that these proposed methods can be used to optimize the performance of PV modules as well as being integrated into the MPP control model for PV systems under practical operation. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/62223 |
全文授權: | 有償授權 |
顯示於系所單位: | 生物機電工程學系 |
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ntu-102-1.pdf 目前未授權公開取用 | 5.75 MB | Adobe PDF |
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