10KW水平轴潮流能发电系统模型建立及关键部件研究

发布时间：2018-04-24 20:42

本文选题：潮流能 + 水平轴叶轮　；参考：《太原科技大学》2014年硕士论文

【摘要】：进入21世纪以来，随着科学技术的不断发展和人口快速增长，常规能源日渐枯竭，开发利用新能源，优化能源结构已经成为大势所趋。潮流能清洁无污染、可反复利用、蕴涵巨大，相比波浪能、海上风能及太阳能规律性更强，受气候影响小，能量密度更大。因此潮流能作为一种有发展潜力的新能源，已经引起许多海洋国家的重视，正积极进行开发研究。近年来，潮流能发电技术日新月异，但如何在变流速下提高发电效率、增大单机组发电量，如何提高装置可靠性、安全性等问题，仍是潮流能发电技术研究的重点和难点。因此，本文以10KW潮流能发电系统为对象，搭建了海上试验平台，针对发电系统效率问题建立了一个可应用于变流速下潮流能发电系统控制策略研究的数学模型。建立的数学模型相比现有的控制模型，，不仅考虑了叶轮捕能效率，同时也考虑了传动系统的效率。对应不同流速，可通过控制模型调整系统各部分的参数，从而使系统在整个流速变化周期内保持最大输出功率。由于叶轮捕能效率，及传动系统元器件效率无法运用数学模型通过计算获得，因此，通过海上试验的实测数据来确定模型中的参数，并对数学模型进行修正，从而得到项目研究的10KW潮流能发电系统的实际控制模型。针对装置可靠性问题，本文对潮流能发电系统叶轮支撑框架进行了设计，通过对各种工况下框架的受力进行分析，在尽可能减小框架对潮流阻碍的同时保证了框架的强度，提高了装置可靠性。
[Abstract]:Since the 21st century, with the continuous development of science and technology and the rapid growth of population, the conventional energy has been exhausted day by day. It has become a general trend to develop and utilize new energy sources and optimize the energy structure. Compared with wave energy, wind energy and solar energy at sea are more regular, less affected by climate and more energy density. Therefore, as a potential new energy source, tidal energy has attracted the attention of many marine countries and is actively developing and researching. In recent years, the technology of power flow power generation is changing with each passing day. However, how to improve the efficiency of power generation, how to increase the generation capacity of single unit, how to improve the reliability and safety of power flow generation is still the key and difficult point in the research of power flow power generation technology. Therefore, this paper takes the 10KW tidal current generation system as the object, builds the offshore test platform, and establishes a mathematical model for the study of the control strategy of the power generation system under variable velocity of velocity, aiming at the efficiency of the power generation system. Compared with the existing control model, the established mathematical model not only considers the efficiency of impeller energy capture, but also considers the efficiency of transmission system. The parameters of each part of the system can be adjusted by the control model to keep the maximum output power of the system during the whole period of velocity variation. Because the efficiency of impeller energy capture and the efficiency of components of transmission system can not be obtained by mathematical model through calculation, the parameters in the model are determined by the measured data of offshore test, and the mathematical model is modified. The actual control model of 10KW power flow power generation system studied by the project is obtained. Aiming at the reliability problem of the device, this paper designs the impeller supporting frame of the power flow power generation system. By analyzing the force of the frame under various working conditions, the strength of the frame is guaranteed while minimizing the hindrance of the frame to the tidal current as far as possible. The reliability of the device is improved.
【学位授予单位】：太原科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：P743;TM612

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