發(fā)布時(shí)間：2018-02-27 08:10

  本文關(guān)鍵詞： 光伏水泵系統(tǒng) 自動(dòng)跟蹤 自吸泵 變速調(diào)速控制 水力設(shè)計(jì) 數(shù)值模擬　出處：《蘭州理工大學(xué)》2012年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著太陽(yáng)能電池材料和光伏技術(shù)的發(fā)展，具有巨大社會(huì)效益和經(jīng)濟(jì)效益的光伏水泵系統(tǒng)，近年來(lái)得到廣泛的應(yīng)用。其具有安裝方便、可不攜帶電池、不受電源和地點(diǎn)的限制以及移動(dòng)性強(qiáng)等特點(diǎn)，已經(jīng)廣泛的應(yīng)用于人畜飲水和移動(dòng)灌溉等各個(gè)領(lǐng)域之中。光伏水泵對(duì)于我國(guó)的中西部缺電地區(qū)意義重大，隨著油價(jià)的上漲以及光伏電池價(jià)格的下降，光伏系統(tǒng)的容量顯著的增加了，太陽(yáng)能利用變得越來(lái)越經(jīng)濟(jì)，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(shè)計(jì)和太陽(yáng)能方陣輸出與負(fù)載之間的合適的匹配，就可以實(shí)現(xiàn)整個(gè)裝置的效率提高。在本文中對(duì)光伏水泵進(jìn)行了自行設(shè)計(jì)，力求與太陽(yáng)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(duì)太陽(yáng)能的利用率較低的情況，通過(guò)閱讀大量文獻(xiàn)和資料，本文對(duì)常規(guī)太陽(yáng)能光伏水泵進(jìn)行了創(chuàng)新性的改進(jìn)設(shè)計(jì)。主要內(nèi)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(wèn)題。本文利用了最大功率點(diǎn)跟蹤方法，使光伏電池工作于最大輸出功率點(diǎn)上，獲得高效功率輸出。并根據(jù)光伏水泵的機(jī)械特性，對(duì)其選擇合適的變頻調(diào)速控制方式。 2.根據(jù)常規(guī)太陽(yáng)能光伏板固定方向布置而導(dǎo)致對(duì)太陽(yáng)能利用率低的缺點(diǎn)，本文創(chuàng)新性的增加了太陽(yáng)能光伏板光線自動(dòng)跟蹤系統(tǒng)，并對(duì)原理進(jìn)行深入分析，并選取合適的跟蹤方式； 3.根據(jù)農(nóng)業(yè)用灌溉泵的特點(diǎn)選取了自吸泵為系統(tǒng)用泵，通過(guò)設(shè)計(jì)參數(shù)設(shè)計(jì)出了符合性能要求的自吸泵，并計(jì)算出了自吸時(shí)間及高度。通過(guò)FLUENT軟件對(duì)泵進(jìn)行了全流場(chǎng)模擬，對(duì)模擬數(shù)據(jù)進(jìn)行了分析，得到了自吸泵的水力性能曲線，達(dá)到了設(shè)計(jì)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(xué)位授予單位】：蘭州理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TH311

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