發(fā)布時間：2018-02-27 08:10

  本文關鍵詞： 光伏水泵系統(tǒng) 自動跟蹤 自吸泵 變速調速控制 水力設計 數值模擬　出處：《蘭州理工大學》2012年碩士論文　論文類型：學位論文

【摘要】：隨著太陽能電池材料和光伏技術的發(fā)展，具有巨大社會效益和經濟效益的光伏水泵系統(tǒng)，近年來得到廣泛的應用。其具有安裝方便、可不攜帶電池、不受電源和地點的限制以及移動性強等特點，已經廣泛的應用于人畜飲水和移動灌溉等各個領域之中。光伏水泵對于我國的中西部缺電地區(qū)意義重大，隨著油價的上漲以及光伏電池價格的下降，光伏系統(tǒng)的容量顯著的增加了，太陽能利用變得越來越經濟，而且光伏陣列的效率，穩(wěn)定性也有了很大的提高。合適的系統(tǒng)設計和太陽能方陣輸出與負載之間的合適的匹配，就可以實現(xiàn)整個裝置的效率提高。在本文中對光伏水泵進行了自行設計，力求與太陽能電池板特性相配合。簽于傳統(tǒng)的光伏水泵通常為定方向式布置，其對太陽能的利用率較低的情況，通過閱讀大量文獻和資料，本文對常規(guī)太陽能光伏水泵進行了創(chuàng)新性的改進設計。主要內容如下： 1.光伏電池發(fā)電輸出屬于非線性，，存在輸出最大功率跟蹤的問題。本文利用了最大功率點跟蹤方法，使光伏電池工作于最大輸出功率點上，獲得高效功率輸出。并根據光伏水泵的機械特性，對其選擇合適的變頻調速控制方式。 2.根據常規(guī)太陽能光伏板固定方向布置而導致對太陽能利用率低的缺點，本文創(chuàng)新性的增加了太陽能光伏板光線自動跟蹤系統(tǒng)，并對原理進行深入分析，并選取合適的跟蹤方式； 3.根據農業(yè)用灌溉泵的特點選取了自吸泵為系統(tǒng)用泵，通過設計參數設計出了符合性能要求的自吸泵，并計算出了自吸時間及高度。通過FLUENT軟件對泵進行了全流場模擬，對模擬數據進行了分析，得到了自吸泵的水力性能曲線，達到了設計要求。
[Abstract]:With the development of solar cell materials and photovoltaic technology, photovoltaic pump system, which has great social and economic benefits, has been widely used in recent years. It has been widely used in many fields, such as drinking water for human and animal, moving irrigation and so on. Photovoltaic pump is of great significance to the power shortage areas in the central and western regions of China. With the increase in oil prices and the decline in the price of photovoltaic cells, the capacity of photovoltaic systems has increased significantly, solar energy utilization has become more and more economical, and photovoltaic arrays have become more efficient. The stability has also been greatly improved. The efficiency of the whole device can be improved by proper system design and proper matching between solar array output and load. In this paper, the photovoltaic pump is designed by itself. In keeping with the characteristics of solar panels. Traditional photovoltaic pumps are usually a directional arrangement, with low solar energy utilization, by reading a large amount of literature and information. This paper has carried on the innovative improvement design to the conventional solar photovoltaic pump. The main contents are as follows:. 1. The output of photovoltaic cell is nonlinear and has the problem of maximum power tracking. In this paper, the maximum power point tracking method is used to make the photovoltaic cell work on the maximum output power point. According to the mechanical characteristics of photovoltaic pump, the suitable control mode of variable frequency speed regulation is selected. 2.According to the disadvantage of low solar energy utilization caused by the fixed direction arrangement of conventional solar photovoltaic panels, this paper creatively adds the solar photovoltaic panel ray automatic tracking system, and analyzes the principle deeply. And select the appropriate tracking method; 3.According to the characteristics of agricultural irrigation pump, the self-priming pump is selected as the system pump, and the self-priming pump is designed according to the design parameters, and the self-priming time and height are calculated. The whole flow field of the pump is simulated by FLUENT software. The simulation data are analyzed and the hydraulic performance curve of the self-priming pump is obtained, which meets the design requirements.
【學位授予單位】：蘭州理工大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TH311

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本文編號：1541847