【摘要】：隨著能源、環(huán)境等問題的告急,新型清潔能源的發(fā)展已變得迫在眉睫。風(fēng)能憑借充沛、環(huán)保、廉價(jià)等優(yōu)勢(shì)在眾多能源種類中脫穎而出。然而作為風(fēng)能主流應(yīng)用方向的風(fēng)力發(fā)電技術(shù),對(duì)其開發(fā)研究受到地理位置等不便因素影響。因此,有必要將風(fēng)力發(fā)電機(jī)“搬移”到實(shí)驗(yàn)室,建立風(fēng)力發(fā)電機(jī)的模擬平臺(tái)。本文通過對(duì)國(guó)內(nèi)外風(fēng)力機(jī)模擬技術(shù)研究現(xiàn)狀的分析研究,提出了一種以直流電動(dòng)機(jī)作為原動(dòng)機(jī),電動(dòng)機(jī)電樞電流作為控制量,TMS320F2812作為控制核心的模擬方案。論文旨在建立與風(fēng)力發(fā)電機(jī)具有相似特性的模擬平臺(tái)。本文首先就風(fēng)速、葉尖速比、槳距角、風(fēng)輪轉(zhuǎn)速、輸出功率幾者的關(guān)系建立了風(fēng)力發(fā)電機(jī)的動(dòng)力學(xué)模型。通過對(duì)模型的分析,確立了模擬風(fēng)力發(fā)電機(jī)的重點(diǎn)在于模擬其輸出功率特性,本文采用控制電動(dòng)機(jī)電樞電流的方式來實(shí)現(xiàn)對(duì)模擬系統(tǒng)輸出功率的控制。其次,就風(fēng)力發(fā)電機(jī)模擬平臺(tái)進(jìn)行了轉(zhuǎn)動(dòng)慣量、輸出轉(zhuǎn)矩的補(bǔ)償,以提高系統(tǒng)的模擬精度。接著,論文對(duì)模擬系統(tǒng)控制部分進(jìn)行了需求分析,并設(shè)計(jì)了基于直流斬波技術(shù)的電動(dòng)機(jī)控制電路。根據(jù)控制系統(tǒng)的數(shù)學(xué)模型,采用帶前饋補(bǔ)償環(huán)節(jié)、串聯(lián)補(bǔ)償環(huán)節(jié)的反饋閉環(huán)控制方式,并對(duì)補(bǔ)償環(huán)節(jié)的參數(shù)做了具體的分析設(shè)計(jì)。最后,在MATLAB/Simulink平臺(tái)對(duì)論文所設(shè)計(jì)的控制算法做了仿真驗(yàn)證,仿真結(jié)果表明:本文提出的算法準(zhǔn)確可行。根據(jù)以上方法設(shè)計(jì),本文采用MATLAB與DSP相結(jié)合的方式搭建系統(tǒng)的軟件平臺(tái),MATLAB主要用于風(fēng)力發(fā)電機(jī)數(shù)學(xué)模型的搭建,DSP則用于實(shí)現(xiàn)模擬平臺(tái)的控制算法與系統(tǒng)的實(shí)時(shí)監(jiān)測(cè)。物理平臺(tái)的實(shí)驗(yàn)數(shù)據(jù)表明:上述模擬方案,不僅能夠在有效風(fēng)速區(qū)域內(nèi)實(shí)現(xiàn)對(duì)風(fēng)力發(fā)電機(jī)輸出功率特性曲線的模擬,而且能保證模擬平臺(tái)具有與風(fēng)力發(fā)電機(jī)相似的動(dòng)態(tài)特性。
[Abstract]:With the urgent development of energy, environment and other problems, the development of new clean energy has become urgent. Wind energy with abundant, environmental, cheap and other advantages in a variety of energy stand out. However, wind power generation technology, which is the mainstream application of wind energy, is affected by geographical location and other inconvenient factors. Therefore, it is necessary to "move" the wind turbine to the laboratory to establish the wind turbine simulation platform. Based on the research status of wind turbine simulation technology at home and abroad, this paper presents a simulation scheme with DC motor as prime mover, armature current as control quantity and TMS320F2812 as control core. The purpose of this paper is to establish a simulation platform with similar characteristics to wind turbine. In this paper, the dynamic model of wind turbine is established in terms of wind speed, tip speed ratio, pitch angle, speed of wind turbine and output power. Through the analysis of the model, it is established that the emphasis of simulating wind turbine is to simulate its output power characteristics. In this paper, the output power of the analog system is controlled by controlling the armature current of the motor. Secondly, the moment of inertia and the output torque are compensated for the simulation platform of wind turbine to improve the simulation accuracy of the system. Then, the paper analyzes the requirements of the analog system control system, and designs the motor control circuit based on DC chopping technology. According to the mathematical model of the control system, the feedback closed loop control method with feedforward compensation link and series compensation link is adopted, and the parameters of the compensation link are analyzed and designed in detail. Finally, the control algorithm designed in this paper is simulated on MATLAB/Simulink platform. The simulation results show that the proposed algorithm is accurate and feasible. According to the above design, the software platform of the system is built by combining MATLAB and DSP. MATLAB is mainly used to build mathematical model of wind turbine, and DSP is used to realize the control algorithm of simulation platform and real-time monitoring of the system. The experimental data of the physical platform show that the simulation scheme can not only simulate the output power characteristic curve of the wind turbine in the effective wind speed region, but also ensure that the simulation platform has dynamic characteristics similar to that of the wind turbine.
【學(xué)位授予單位】：電子科技大學(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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相關(guān)期刊論文 前1條

1 洪沙;;淺談能源對(duì)環(huán)境的影響[J];貴州化工;2011年04期

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本文編號(hào)：2326218