本文選題：風(fēng)力發(fā)電提水系統(tǒng)　切入點(diǎn)：準(zhǔn)Z源逆變器　出處：《內(nèi)蒙古大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著經(jīng)濟(jì)社會(huì)的快速發(fā)展,能源與環(huán)境問題日漸突出,調(diào)整能源結(jié)構(gòu)使用清潔能源是化簡(jiǎn)經(jīng)濟(jì)發(fā)展與環(huán)境矛盾的良方。偏遠(yuǎn)地區(qū)人口居住分散、交通不便,常規(guī)電網(wǎng)輸電成本高技術(shù)難度大,致使這些地區(qū)的輸送電問題一直未能很好的解決。風(fēng)力發(fā)電提水系統(tǒng)可以解決缺電地區(qū)的供水問題。但目前的風(fēng)力發(fā)電提水系統(tǒng)存在升壓不足,直流鏈電壓利用率不高的現(xiàn)象。本文以基于準(zhǔn)Z源逆變器的風(fēng)力發(fā)電提水系統(tǒng)為研究對(duì)象,對(duì)準(zhǔn)Z源逆變器和三相異步電動(dòng)機(jī)的控制進(jìn)行了研究。主要研究?jī)?nèi)容如下:首先,論述了風(fēng)力發(fā)電提水系統(tǒng)的背景及意義,并且歸納總結(jié)了國(guó)內(nèi)外對(duì)風(fēng)力發(fā)電提水系統(tǒng)的研究狀況。提出了風(fēng)力發(fā)電提水系統(tǒng)的整體結(jié)構(gòu),對(duì)系統(tǒng)的各組成部分進(jìn)行了性能分析。其次,分析了準(zhǔn)Z源逆變器的拓?fù)浣Y(jié)構(gòu)和升壓原理,計(jì)算了準(zhǔn)Z源逆變器直流側(cè)阻抗網(wǎng)絡(luò)的參數(shù),在此基礎(chǔ)上提出了三次諧波注入SPWM波的恒占空比調(diào)制方法對(duì)準(zhǔn)Z源逆變器進(jìn)行控制。再次,進(jìn)行了風(fēng)力發(fā)電提水系統(tǒng)的設(shè)計(jì),對(duì)風(fēng)力發(fā)電提水系統(tǒng)的水泵、電動(dòng)機(jī)、風(fēng)力發(fā)電機(jī)、準(zhǔn)Z源逆變器及蓄水池進(jìn)行了匹配和選型,設(shè)計(jì)了三相異步電動(dòng)機(jī)的控制方法。最后,在Matlab仿真軟件中搭建風(fēng)力發(fā)電提水系統(tǒng)的仿真模型,對(duì)準(zhǔn)Z源逆變器直流側(cè)升壓和交流側(cè)逆變控制方法進(jìn)行了仿真驗(yàn)證。對(duì)仿真結(jié)果進(jìn)行了分析。結(jié)果表明,電動(dòng)機(jī)轉(zhuǎn)速可以穩(wěn)定的跟蹤風(fēng)速的變化,同時(shí)實(shí)現(xiàn)了準(zhǔn)Z源逆變器的升壓控制和三相異步電動(dòng)機(jī)的變頻調(diào)速,保證風(fēng)力發(fā)電提水系統(tǒng)能夠穩(wěn)定、高效的運(yùn)行。
[Abstract]:With the rapid development of economy and society, the problems of energy and environment are becoming more and more prominent. Adjusting the energy structure and using clean energy is the best way to simplify the contradiction between economic development and environment. The transmission cost of conventional power grid is very difficult. As a result, the problem of power transmission in these areas has not been solved very well. The wind-powered pumping system can solve the problem of water supply in areas without electricity. The phenomenon of low utilization rate of DC link voltage is studied in this paper. The control of Z-source inverter and three-phase asynchronous motor is studied in this paper, which is based on quasi-Z-source inverter. The main research contents are as follows: first of all, This paper discusses the background and significance of the wind-powered water lifting system, summarizes the research status of the wind-powered water lifting system at home and abroad, and puts forward the overall structure of the wind-powered water lifting system. The performance of each component of the system is analyzed. Secondly, the topology and boost principle of the quasi-Z-source inverter are analyzed, and the parameters of the DC side impedance network of the quasi-Z-source inverter are calculated. On this basis, a constant-duty ratio modulation method for third-harmonic injection of SPWM wave is proposed to control the Z-source inverter. Thirdly, the design of the wind-powered water lift system is carried out, and the pump and motor of the wind-power pumping system are designed. The wind turbine, quasi-Z-source inverter and storage tank are matched and selected, and the control method of three-phase asynchronous motor is designed. Finally, the simulation model of wind-power pumping system is built in Matlab simulation software. The DC side boost control method and AC side inverter control method of Z source inverter are simulated and verified. The simulation results are analyzed. The results show that the speed of motor can track the change of wind speed stably. At the same time, the boost control of the quasi-Z-source inverter and the frequency conversion speed regulation of the three-phase asynchronous motor are realized to ensure the stable and efficient operation of the wind-powered water lifting system.
【學(xué)位授予單位】：內(nèi)蒙古大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM614;TU991

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本文編號(hào)：1598437