發(fā)布時間：2018-10-16 11:05

【摘要】：近年來，國內外風力發(fā)電行業(yè)快速發(fā)展，在緩解環(huán)境和能源危機方面發(fā)揮著重要作用。液壓型風力發(fā)電機組作為一種新機型，與傳統(tǒng)雙饋機型和直驅機型相比，具有功重比高、減速比實時可調、電能質量高等優(yōu)點。提高風電機組的風電轉換效率，對于新機型的應用推廣具有重要意義，而最佳功率追蹤控制是提高風電機組的風電轉換效率的有效途徑，因此，一般要求風力發(fā)電機組具有最佳功率追蹤控制功能。 本文以液壓型風力發(fā)電機組最佳功率追蹤控制方法為研究內容，在對機組各部分特性分析的基礎上，采用理論分析、仿真與實驗相結合的研究方法，從風力機轉速控制、液壓系統(tǒng)壓力控制和發(fā)電功率控制三個方面著手，重點研究了液壓型風力發(fā)電機組最佳功率追蹤控制這一關鍵技術。 在對液壓型風力發(fā)電機組最佳功率追蹤控制方法進行研究時，本文結合液壓傳動系統(tǒng)的特點，提出了四種液壓型風力發(fā)電機組最佳功率追蹤控制方法，并從理論上分析了各種方法控制的優(yōu)缺點。其中，第一種方法的實質是直接發(fā)電功率控制；第二種方法的實質是發(fā)電功率和風力機轉速聯(lián)合控制，，是針對第一種方法的不足而提出的改進的控制方法；第三種方法的實質是直接壓力控制；第四種方法的實質是壓力和風力機轉速聯(lián)合控制，是針對第三種方法的不足而提出的改進的控制方法。 利用MATLAB/Simulink軟件和AMESim軟件搭建了液壓型風力發(fā)電機組最佳功率追蹤控制聯(lián)合仿真模型，對提出的四種最佳功率追蹤控制方法分別進行了仿真研究；在理論及仿真分析基礎上，利用實驗室搭建的30kVA液壓型風力發(fā)電機組實驗平臺分別對四種控制方法進行了實驗研究，驗證了本文中對四種液壓型風力發(fā)電機組最佳功率追蹤控制方法的理論研究的正確性。
[Abstract]:In recent years, wind power industry has developed rapidly at home and abroad, which plays an important role in alleviating the environmental and energy crisis. As a new type of wind turbine, hydraulic wind turbine has the advantages of high power to weight ratio, real time adjustable deceleration ratio and high power quality compared with the traditional doubly-fed type and direct-drive type. Improving wind power conversion efficiency of wind turbine is of great significance to the application and popularization of new type, and optimal power tracking control is an effective way to improve wind power conversion efficiency of wind turbine. Wind turbine is generally required to have the best power tracking control function. In this paper, the optimal power tracking control method of hydraulic wind turbine is taken as the research content. Based on the analysis of the characteristics of each part of the unit, the research method of combining theoretical analysis, simulation and experiment is adopted to control the speed of the wind turbine. Three aspects of hydraulic system pressure control and generation power control are carried out, and the key technology of optimal power tracking control of hydraulic wind turbine is studied. In this paper, four kinds of optimal power tracking control methods of hydraulic wind turbine are put forward according to the characteristics of hydraulic transmission system. The advantages and disadvantages of various control methods are analyzed theoretically. The essence of the first method is direct generation power control, the second method is the combined control of generation power and wind turbine speed, which is an improved control method aiming at the deficiency of the first method. The essence of the third method is the direct pressure control, and the fourth method is the combined control of the pressure and the speed of the wind turbine, which is an improved control method aiming at the deficiency of the third method. The combined simulation model of optimal power tracking control for hydraulic wind turbine is built by using MATLAB/Simulink and AMESim software. The four optimal power tracking control methods are simulated and studied respectively. Four kinds of control methods are studied by using the 30kVA hydraulic wind turbine experimental platform which is built in the laboratory. The correctness of the theoretical research of the four optimal power tracking control methods for hydraulic wind turbine is verified in this paper.
【學位授予單位】：燕山大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM315

【參考文獻】

相關期刊論文 前3條

1 任艷鋒;毛開富;包廣清;;基于神經網絡的直驅式風力發(fā)電最大風能控制研究[J];電氣自動化;2009年06期

2 江玲玲;張俊俊;;基于AMESim與Matlab/Simulink聯(lián)合仿真技術的接口與應用研究[J];機床與液壓;2008年01期

3 楊軍;;風電機組動態(tài)分析適用風速模型[J];西南科技大學學報;2010年01期

相關博士學位論文 前3條

1 陳毅東;全功率變流器風機運行品質優(yōu)化控制技術的研究[D];燕山大學;2012年

2 艾超;液壓型風力發(fā)電機組轉速控制和功率控制研究[D];燕山大學;2012年

3 祝賀;直驅永磁風力發(fā)電機組數學模型及并網運行特性研究[D];沈陽工業(yè)大學;2013年

本文編號：2274168