本文關(guān)鍵詞： 新能源 垂直軸風(fēng)力機(jī) 偏轉(zhuǎn)式發(fā)電機(jī) 流體動(dòng)力學(xué) 控制方法　出處：《河北科技大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：風(fēng)能是一種清潔、可再生能源,是未來(lái)新能源發(fā)展的重要組成部分。在風(fēng)力機(jī)將風(fēng)能轉(zhuǎn)換為機(jī)械能的過(guò)程中,風(fēng)輪是主要的部件,并分為水平軸風(fēng)力機(jī)和垂直軸風(fēng)力機(jī)。垂直軸風(fēng)力機(jī)具有啟動(dòng)轉(zhuǎn)速低,不受風(fēng)向限制,運(yùn)行范圍寬等優(yōu)點(diǎn),因此受到各國(guó)廣泛關(guān)注。本文主要研究一種新型垂直軸風(fēng)力發(fā)電機(jī),風(fēng)力發(fā)電系統(tǒng)主要包括三個(gè)部分:垂直軸風(fēng)力機(jī)、兩自由度永磁同步發(fā)電機(jī)和控制部分。風(fēng)能經(jīng)風(fēng)輪轉(zhuǎn)換為機(jī)械能,進(jìn)而傳送給發(fā)電機(jī),最后通過(guò)與控制部分相結(jié)合進(jìn)行風(fēng)力發(fā)電。具體工作內(nèi)容歸納如下:1)本文提出一種新型垂直軸風(fēng)力機(jī)系統(tǒng)結(jié)構(gòu),采用ANSYS WORKBENCH流體力學(xué)分析軟件建立風(fēng)力機(jī)的三維模型,計(jì)算風(fēng)力機(jī)在不同轉(zhuǎn)速下產(chǎn)生的機(jī)械轉(zhuǎn)矩。通過(guò)改變參數(shù),包括風(fēng)輪的結(jié)構(gòu),兩側(cè)風(fēng)輪互錯(cuò)的角度和風(fēng)速方向,重新仿真計(jì)算出轉(zhuǎn)矩系數(shù)和風(fēng)能利用系數(shù)等結(jié)果,與本文模型結(jié)果相比較,體現(xiàn)了新型垂直軸風(fēng)力機(jī)的結(jié)構(gòu)優(yōu)勢(shì),最后建立風(fēng)輪數(shù)學(xué)模型;2)發(fā)電機(jī)使用專門(mén)設(shè)計(jì)的偏轉(zhuǎn)式永磁同步發(fā)電機(jī),可以通過(guò)控制使其進(jìn)入電動(dòng)狀態(tài)運(yùn)行,實(shí)現(xiàn)兩自由度旋轉(zhuǎn)。發(fā)電機(jī)具有分布式繞組和集中式繞組,分別用于實(shí)現(xiàn)發(fā)電和電動(dòng)狀態(tài)。采用ANSOFT MAXWELL電磁場(chǎng)分析軟件建立兩自由度發(fā)電機(jī)的三維模型,并對(duì)發(fā)電機(jī)在發(fā)電狀態(tài)下的電流、電壓等輸出特性進(jìn)行了分析;3)分析風(fēng)機(jī)實(shí)現(xiàn)最大功率跟蹤的幾種方法,結(jié)合本文風(fēng)力機(jī)的特點(diǎn),最終采用最佳尖速比控制法與矢量控制相結(jié)合,建立風(fēng)機(jī)控制系統(tǒng)模型;4)在MATLAB/SIMULINK軟件下,搭建了風(fēng)速模型、風(fēng)輪模型和永磁同步發(fā)電機(jī)模型,使用上述模型,建立風(fēng)力發(fā)電機(jī)系統(tǒng)的仿真模型,對(duì)風(fēng)機(jī)系統(tǒng)進(jìn)行發(fā)電特性仿真分析。
[Abstract]:Wind energy is a kind of clean, renewable energy and an important part of the development of new energy in the future. In the process of converting wind energy into mechanical energy, wind turbine is the main component. The vertical axis wind turbine has the advantages of low starting speed, no restriction of wind direction, wide range of operation and so on, so it has attracted wide attention in many countries. In this paper, a new type of vertical axis wind turbine is studied. Wind power system consists of three parts: vertical axis wind turbine, two degree of freedom permanent magnet synchronous generator and control part. Wind energy is converted into mechanical energy by wind turbine and then transmitted to generator. Finally, wind power generation is carried out by combining with the control part. The specific work is summarized as follows: 1) this paper presents a new vertical axis wind turbine system structure, and uses ANSYS WORKBENCH hydrodynamic analysis software to establish the three-dimensional model of the wind turbine. By changing the parameters, including the structure of the wind turbine, the angle between the two sides of the wind turbine and the direction of the wind speed, the results of the torque coefficient and the wind energy utilization coefficient are re-simulated. Compared with the results of the model in this paper, it reflects the structural advantages of the new vertical axis wind turbine. Finally, the wind turbine mathematical model is established. The generator uses a specially designed permanent magnet synchronous generator, which can be operated in an electric state by control. The generator has distributed windings and centralized windings, which are used to realize the power generation and electric state, respectively. The three-dimensional model of the two-degree-of-freedom generator is established by using ANSOFT MAXWELL electromagnetic field analysis software. This paper also analyzes the output characteristics of generator in the state of generation, such as current and voltage, and analyzes several methods of realizing the maximum power tracking of the fan, combining the characteristics of the wind turbine in this paper. Finally, the optimal tip speed ratio control method and vector control method are used to establish the fan control system model. Under the MATLAB/SIMULINK software, wind speed model, wind turbine model and permanent magnet synchronous generator model are built, and the above models are used. The simulation model of wind turbine system is established, and the generation characteristics of fan system are simulated and analyzed.
【學(xué)位授予單位】：河北科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM315

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李正泉;宋麗莉;馬浩;馮濤;王闊;;海上風(fēng)能資源觀測(cè)與評(píng)估研究進(jìn)展[J];地球科學(xué)進(jìn)展;2016年08期

2 姚激;張炳權(quán);曹亮;王惠民;翟宸;曹學(xué)華;張立翔;;不同分析方法對(duì)風(fēng)力機(jī)塔筒動(dòng)力特性的研究[J];河北科技大學(xué)學(xué)報(bào);2015年04期

3 李欣然;馬亞輝;曹一家;徐振華;劉衛(wèi)健;戶龍輝;;一種雙饋式風(fēng)力發(fā)電系統(tǒng)的等效模型[J];電工技術(shù)學(xué)報(bào);2015年08期

4 李爭(zhēng);張s，

本文編號(hào)：1534226