【摘要】：近年來(lái)，國(guó)內(nèi)外風(fēng)力發(fā)電行業(yè)快速發(fā)展，在緩解環(huán)境和能源危機(jī)方面發(fā)揮著重要作用。液壓型風(fēng)力發(fā)電機(jī)組作為一種新機(jī)型，與傳統(tǒng)雙饋機(jī)型和直驅(qū)機(jī)型相比，具有功重比高、減速比實(shí)時(shí)可調(diào)、電能質(zhì)量高等優(yōu)點(diǎn)。提高風(fēng)電機(jī)組的風(fēng)電轉(zhuǎn)換效率，對(duì)于新機(jī)型的應(yīng)用推廣具有重要意義，而最佳功率追蹤控制是提高風(fēng)電機(jī)組的風(fēng)電轉(zhuǎn)換效率的有效途徑，因此，一般要求風(fēng)力發(fā)電機(jī)組具有最佳功率追蹤控制功能。 本文以液壓型風(fēng)力發(fā)電機(jī)組最佳功率追蹤控制方法為研究?jī)?nèi)容，在對(duì)機(jī)組各部分特性分析的基礎(chǔ)上，采用理論分析、仿真與實(shí)驗(yàn)相結(jié)合的研究方法，從風(fēng)力機(jī)轉(zhuǎn)速控制、液壓系統(tǒng)壓力控制和發(fā)電功率控制三個(gè)方面著手，重點(diǎn)研究了液壓型風(fēng)力發(fā)電機(jī)組最佳功率追蹤控制這一關(guān)鍵技術(shù)。 在對(duì)液壓型風(fēng)力發(fā)電機(jī)組最佳功率追蹤控制方法進(jìn)行研究時(shí)，本文結(jié)合液壓傳動(dòng)系統(tǒng)的特點(diǎn)，提出了四種液壓型風(fēng)力發(fā)電機(jī)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(diǎn)。其中，第一種方法的實(shí)質(zhì)是直接發(fā)電功率控制；第二種方法的實(shí)質(zhì)是發(fā)電功率和風(fēng)力機(jī)轉(zhuǎn)速聯(lián)合控制，，是針對(duì)第一種方法的不足而提出的改進(jìn)的控制方法；第三種方法的實(shí)質(zhì)是直接壓力控制；第四種方法的實(shí)質(zhì)是壓力和風(fēng)力機(jī)轉(zhuǎn)速聯(lián)合控制，是針對(duì)第三種方法的不足而提出的改進(jìn)的控制方法。 利用MATLAB/Simulink軟件和AMESim軟件搭建了液壓型風(fēng)力發(fā)電機(jī)組最佳功率追蹤控制聯(lián)合仿真模型，對(duì)提出的四種最佳功率追蹤控制方法分別進(jìn)行了仿真研究；在理論及仿真分析基礎(chǔ)上，利用實(shí)驗(yàn)室搭建的30kVA液壓型風(fēng)力發(fā)電機(jī)組實(shí)驗(yàn)平臺(tái)分別對(duì)四種控制方法進(jìn)行了實(shí)驗(yàn)研究，驗(yàn)證了本文中對(duì)四種液壓型風(fēng)力發(fā)電機(jī)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(xué)位授予單位】：燕山大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM315

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本文編號(hào)：2274168