本文選題：風(fēng)電機(jī) + 臺風(fēng)�。� 參考：《集美大學(xué)》2014年碩士論文

【摘要】：風(fēng)能已成為目前世界上最重要的一種可再生能源，隨著風(fēng)力發(fā)電產(chǎn)業(yè)快速的發(fā)展，歐美等國海上風(fēng)力發(fā)電技術(shù)已日趨成熟，而我國海上風(fēng)能的開發(fā)剛剛起步，并且我國大部分海域受臺風(fēng)影響嚴(yán)重。葉片是風(fēng)電機(jī)關(guān)鍵部件之一，葉片的氣動外形決定風(fēng)電機(jī)的轉(zhuǎn)換效率，也是在臺風(fēng)中最容易被毀壞的，因此很有必要對海上風(fēng)電機(jī)葉片的抗臺風(fēng)特性進(jìn)行研究，這些工作對于我國海上風(fēng)電產(chǎn)業(yè)的發(fā)展具有積極意義。 本文重點(diǎn)研究了3.0MW海上風(fēng)力機(jī)的葉片氣動外形設(shè)計(jì)和葉片的抗臺風(fēng)特性，所做的主要工作如下： 1）通過查找資料與文獻(xiàn)研究了目前風(fēng)電產(chǎn)業(yè)的發(fā)展情況，國內(nèi)外對風(fēng)力發(fā)電機(jī)葉片設(shè)計(jì)優(yōu)化方法的研究，，以及臺風(fēng)對風(fēng)機(jī)的破壞機(jī)制； 2）分析了風(fēng)力機(jī)葉片設(shè)計(jì)理論和葉片設(shè)計(jì)方法，通過對多種設(shè)計(jì)方案的分析對比，Wilson葉片設(shè)計(jì)方法是目前風(fēng)力機(jī)葉片設(shè)計(jì)較為準(zhǔn)確且運(yùn)用最為廣泛的設(shè)計(jì)方法。本文按照Wilson法優(yōu)化設(shè)計(jì)風(fēng)力機(jī)葉片幾何外形，確定優(yōu)化設(shè)計(jì)數(shù)學(xué)模型以及約束條件，以MATLAB為工具計(jì)算葉片外形各參數(shù)，綜合Wilson方法考慮葉片梢部損失、根部損失和軸向、周向干擾因子對葉片空氣動力學(xué)性能的影響，大大提高了葉片的設(shè)計(jì)精度和設(shè)計(jì)計(jì)算效率，并對計(jì)算結(jié)果進(jìn)行線性化修正處理； 3）基于UG的自由曲面造型功能，對風(fēng)力機(jī)葉片進(jìn)行參數(shù)化建模，并在ANSYS中對葉片進(jìn)行模態(tài)分析，得到其固有頻率以及在各階頻率下的振動變形情況； 4）分析了風(fēng)力發(fā)電機(jī)在臺風(fēng)來臨時的應(yīng)對措施，利用下風(fēng)向風(fēng)輪的自動偏航作用，在臺風(fēng)來臨時，松開偏航剎車，依靠風(fēng)力轉(zhuǎn)動風(fēng)輪，這樣既能做到應(yīng)變的準(zhǔn)確與同步，又避免失電后偏航系統(tǒng)受力損壞。并基于CFD技術(shù)，建立了海上風(fēng)力發(fā)電機(jī)組葉輪及流場模型，使風(fēng)電機(jī)在臺風(fēng)來臨時停機(jī)并將葉輪轉(zhuǎn)至下風(fēng)向，在Fluent中分析了極端風(fēng)速條件下，葉片的扭轉(zhuǎn)角對葉輪所受壓力的影響。
[Abstract]:Wind energy has become the most important renewable energy in the world. With the rapid development of wind power industry, offshore wind power generation technology in Europe and America has become more and more mature, and the development of offshore wind energy in China has just started. And most of our sea area is seriously affected by typhoon. The blade is one of the key components of the wind motor. The aerodynamic shape of the blade determines the conversion efficiency of the wind motor and is the most easily destroyed in the typhoon. Therefore, it is necessary to study the typhoon resistance characteristics of the blade of the offshore wind motor. These works have positive significance for the development of offshore wind power industry in China. In this paper, the aerodynamic design of 3.0MW offshore wind turbine blade and the typhoon resistance characteristics of the blade are studied. The main work is as follows: 1) the development of wind power industry, the optimization method of wind turbine blade design at home and abroad, and the damage mechanism of wind turbine caused by typhoon are studied by looking up data and literature. 2) the blade design theory and blade design method of wind turbine are analyzed. Wilson blade design method is the most accurate and widely used design method for wind turbine blade design. According to the Wilson method, this paper optimizes the design of the blade geometry of wind turbine, determines the mathematical model of the optimal design and the constraint conditions, calculates the parameters of the blade shape by using MATLAB as a tool, and considers the blade tip loss, root loss and axial direction by comprehensive Wilson method. The influence of the circumferential interference factor on the aerodynamic performance of the blade greatly improves the design accuracy and the design efficiency of the blade, and makes linearization correction of the calculation results. 3) based on the free-form surface modeling function of UG, the parametric modeling of wind turbine blade is carried out, and the modal analysis of the blade is carried out in ANSYS, and the natural frequency and vibration deformation under each order frequency are obtained. 4) analyzing the countermeasures of wind turbine in the coming of typhoon, using the automatic yawing action of downwind wind turbine, loosening yaw brake and turning wind turbine depending on wind force when typhoon comes, so that the strain can be accurate and synchronous. It also avoids the force damage of yaw system after power loss. Based on the CFD technology, the impeller and flow field model of offshore wind turbine is established, which makes the wind motor stop and turn the impeller to the lower wind direction when the typhoon comes. The extreme wind speed is analyzed in Fluent. The influence of the blade torsion angle on the pressure of the impeller.
【學(xué)位授予單位】：集美大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM315

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 鐘方國;趙鴻漢;;風(fēng)力發(fā)電發(fā)展現(xiàn)狀及復(fù)合材料在風(fēng)力發(fā)電上的應(yīng)用[J];玻璃纖維;2007年04期

2 王維斌;于國棟;陳慶光;王濤;張永超;;CFD軟件在對旋式軸流風(fēng)機(jī)數(shù)值模擬中的應(yīng)用[J];風(fēng)機(jī)技術(shù);2011年05期

3 陳永輝;王強(qiáng);樸明波;;湍流模型的發(fā)展及其研究現(xiàn)狀[J];能源與環(huán)境;2009年02期

4 吳金城;張容焱;張秀芝;;海上風(fēng)電機(jī)的抗臺風(fēng)設(shè)計(jì)[J];中國工程科學(xué);2010年11期

5 王景全;陳政清;;試析海上風(fēng)機(jī)在強(qiáng)臺風(fēng)下葉片受損風(fēng)險與對策——考察紅海灣風(fēng)電場的啟示[J];中國工程科學(xué);2010年11期

6 陳t熁

本文編號：1887953