發(fā)布時間：2018-04-24 20:42

  本文選題：潮流能 + 水平軸葉輪　； 參考：《太原科技大學》2014年碩士論文

【摘要】：進入21世紀以來，隨著科學技術的不斷發(fā)展和人口快速增長，常規(guī)能源日漸枯竭，開發(fā)利用新能源，優(yōu)化能源結(jié)構(gòu)已經(jīng)成為大勢所趨。潮流能清潔無污染、可反復利用、蘊涵巨大，相比波浪能、海上風能及太陽能規(guī)律性更強，受氣候影響小，能量密度更大。因此潮流能作為一種有發(fā)展?jié)摿Φ男履茉�，已�?jīng)引起許多海洋國家的重視，正積極進行開發(fā)研究。 近年來，潮流能發(fā)電技術日新月異，但如何在變流速下提高發(fā)電效率、增大單機組發(fā)電量，如何提高裝置可靠性、安全性等問題，仍是潮流能發(fā)電技術研究的重點和難點。因此，本文以10KW潮流能發(fā)電系統(tǒng)為對象，搭建了海上試驗平臺，針對發(fā)電系統(tǒng)效率問題建立了一個可應用于變流速下潮流能發(fā)電系統(tǒng)控制策略研究的數(shù)學模型。建立的數(shù)學模型相比現(xiàn)有的控制模型，，不僅考慮了葉輪捕能效率，同時也考慮了傳動系統(tǒng)的效率。對應不同流速，可通過控制模型調(diào)整系統(tǒng)各部分的參數(shù)，從而使系統(tǒng)在整個流速變化周期內(nèi)保持最大輸出功率。由于葉輪捕能效率，及傳動系統(tǒng)元器件效率無法運用數(shù)學模型通過計算獲得，因此，通過海上試驗的實測數(shù)據(jù)來確定模型中的參數(shù)，并對數(shù)學模型進行修正，從而得到項目研究的10KW潮流能發(fā)電系統(tǒng)的實際控制模型。針對裝置可靠性問題，本文對潮流能發(fā)電系統(tǒng)葉輪支撐框架進行了設計，通過對各種工況下框架的受力進行分析，在盡可能減小框架對潮流阻礙的同時保證了框架的強度，提高了裝置可靠性。
[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.
【學位授予單位】：太原科技大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：P743;TM612

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本文編號：1798197