自动跟踪式太阳能光伏水泵设计及性能预测

发布时间：2018-02-27 08:10

本文关键词： 光伏水泵系统自动跟踪自吸泵变速调速控制水力设计数值模拟　出处：《兰州理工大学》2012年硕士论文　论文类型：学位论文

【摘要】：随着太阳能电池材料和光伏技术的发展，具有巨大社会效益和经济效益的光伏水泵系统，近年来得到广泛的应用。其具有安装方便、可不携带电池、不受电源和地点的限制以及移动性强等特点，已经广泛的应用于人畜饮水和移动灌溉等各个领域之中。光伏水泵对于我国的中西部缺电地区意义重大，随着油价的上涨以及光伏电池价格的下降，光伏系统的容量显著的增加了，太阳能利用变得越来越经济，而且光伏阵列的效率，稳定性也有了很大的提高。合适的系统设计和太阳能方阵输出与负载之间的合适的匹配，就可以实现整个装置的效率提高。在本文中对光伏水泵进行了自行设计，力求与太阳能电池板特性相配合。签于传统的光伏水泵通常为定方向式布置，其对太阳能的利用率较低的情况，通过阅读大量文献和资料，本文对常规太阳能光伏水泵进行了创新性的改进设计。主要内容如下： 1.光伏电池发电输出属于非线性，，存在输出最大功率跟踪的问题。本文利用了最大功率点跟踪方法，使光伏电池工作于最大输出功率点上，获得高效功率输出。并根据光伏水泵的机械特性，对其选择合适的变频调速控制方式。 2.根据常规太阳能光伏板固定方向布置而导致对太阳能利用率低的缺点，本文创新性的增加了太阳能光伏板光线自动跟踪系统，并对原理进行深入分析，并选取合适的跟踪方式； 3.根据农业用灌溉泵的特点选取了自吸泵为系统用泵，通过设计参数设计出了符合性能要求的自吸泵，并计算出了自吸时间及高度。通过FLUENT软件对泵进行了全流场模拟，对模拟数据进行了分析，得到了自吸泵的水力性能曲线，达到了设计要求。
[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.
【学位授予单位】：兰州理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH311

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