本文選題：電池儲(chǔ)能系統(tǒng)　切入點(diǎn)：控制策略　出處：《廣西大學(xué)》2014年碩士論文

【摘要】：進(jìn)入二十一世紀(jì)后,世界能源格局的變化和環(huán)境污染的加劇促進(jìn)了以風(fēng)能、太陽(yáng)能為代表的新能源發(fā)電并網(wǎng)技術(shù)的研究和應(yīng)用。與其他類(lèi)型儲(chǔ)能系統(tǒng)相比,電池儲(chǔ)能系統(tǒng)的經(jīng)濟(jì)效益高、使用條件限制少、安裝維護(hù)方便靈活,在需配備儲(chǔ)能的新能源并網(wǎng)發(fā)電以及電動(dòng)汽車(chē)等應(yīng)用終端的使用都比較廣泛。儲(chǔ)能變流器是電池儲(chǔ)能系統(tǒng)的重要組成部分,是儲(chǔ)能電池組和電網(wǎng)間電能傳輸?shù)臉蛄骸Ｒ螂p向變流器在儲(chǔ)能系統(tǒng)中起到的獨(dú)特作用,對(duì)其的研究越來(lái)越廣泛,而熱點(diǎn)集中在靈活模塊化且高效充放電的電路拓?fù)浣Y(jié)構(gòu)以及其控制策略這兩個(gè)方面。 本文以三電池組接入的兩級(jí)式功率變換系統(tǒng)為主要研究?jī)?nèi)容,重點(diǎn)研究的是主電路參數(shù)設(shè)計(jì)和系統(tǒng)的控制策略,并通過(guò)Matlab仿真和小功率實(shí)驗(yàn)對(duì)其進(jìn)行了驗(yàn)證。 首先對(duì)幾種常見(jiàn)的PCS拓?fù)浣Y(jié)構(gòu)進(jìn)行對(duì)比和分析,結(jié)合并網(wǎng)PCS的設(shè)計(jì)要求,選擇以雙向DC-DC變流器與雙向DC-AC變流器級(jí)聯(lián)的兩級(jí)式非隔離PCS作為基本功率變換單元,并對(duì)主電路中的直流母線支撐電容、網(wǎng)側(cè)濾波器以及直流側(cè)的升壓電感、電池側(cè)電容等關(guān)鍵參數(shù)進(jìn)行了設(shè)計(jì)。 其次,分析了兩級(jí)式PCS工作原理及系統(tǒng)數(shù)學(xué)模型。論文利用子系統(tǒng)集成法對(duì)兩級(jí)式PCS的三個(gè)主要組成部分：LCL濾波器、三相兩電平DC-AC變流器及雙向DC-DC變流器進(jìn)行了詳細(xì)建模設(shè)計(jì),并給出了各自的簡(jiǎn)化模型用于控制器設(shè)計(jì) 再次,對(duì)PCS的控制策略展開(kāi)研究。根據(jù)DC-AC變流器和DC-DC變流器的控制原理,分析了兩者的協(xié)調(diào)控制方法,研究了在統(tǒng)一控制策略下恒流、恒壓二階段式充放電控制。為提高系統(tǒng)性能,將DC-AC變流器直流母線外環(huán)控制器設(shè)計(jì)成模糊PI控制。利用MATLAB軟件搭建了系統(tǒng)仿真模型并進(jìn)行了仿真。 論文最后對(duì)本文設(shè)計(jì)的由三個(gè)雙向DC-DC變流器和一個(gè)雙向DC-AC變流器組成的PCS進(jìn)行了小功率實(shí)驗(yàn),實(shí)驗(yàn)結(jié)果表明本文提出的設(shè)計(jì)方案并達(dá)到了設(shè)計(jì)的要求,驗(yàn)證了控制策略的正確性和可行性。
[Abstract]:After entering the 21 century, the change of the world energy pattern and the aggravation of the environmental pollution have promoted the research and application of the new energy generation grid technology represented by wind energy and solar energy.Compared with other types of energy storage system, battery energy storage system has higher economic benefits, less conditions of use, convenient and flexible installation and maintenance, and is widely used in the grid power generation of new energy sources and electric vehicles which need to be equipped with energy storage.Energy storage converter is an important part of battery energy storage system and a bridge between energy storage battery pack and power grid.Due to the unique role of bidirectional converters in energy storage systems, the research on them is more and more extensive, while the focus is on the flexible modularization and efficient charging and discharging circuit topology structure and its control strategy.This paper focuses on the design of the main circuit parameters and the control strategy of the system, and verifies it by Matlab simulation and small power experiment.Firstly, several common PCS topologies are compared and analyzed. Combined with the design requirements of grid-connected PCS, two-stage non-isolated PCS, which is cascaded by two-way DC-DC converter and bi-directional DC-AC converter, is chosen as the basic power conversion unit.The key parameters such as DC busbar supporting capacitor, grid-side filter, DC side boost inductor and battery side capacitance are designed.Secondly, the working principle and system mathematical model of two-stage PCS are analyzed.In this paper, three main components of two-stage PCS, namely: LCL filter, three-phase two-level DC-AC converter and bi-directional DC-DC converter, are modeled and designed by subsystem integration method, and their simplified models are given for controller design.Thirdly, the control strategy of PCS is studied.According to the control principle of DC-AC converter and DC-DC converter, the coordinated control method is analyzed, and the constant current, constant voltage two-stage charge / discharge control is studied under the unified control strategy.In order to improve the system performance, the DC-AC converter DC busbar outer loop controller is designed as fuzzy Pi control.The system simulation model is built by using MATLAB software and the simulation is carried out.At the end of the paper, the design of PCS composed of three bidirectional DC-DC converters and one bidirectional DC-AC converter is carried out in a small power experiment. The experimental results show that the proposed scheme meets the requirements of the design.The correctness and feasibility of the control strategy are verified.
【學(xué)位授予單位】：廣西大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TM46;TM910

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 陳亞愛(ài);張衛(wèi)平;周京華;劉坤;;開(kāi)關(guān)變換器控制技術(shù)綜述[J];電氣應(yīng)用;2008年04期

2 陳明;汪光森;劉德紅;郭俊華;胡安;;多重化雙向DC-DC變換器復(fù)合校正雙閉環(huán)控制策略研究[J];電力自動(dòng)化設(shè)備;2009年03期

3 孔令怡;廖麗瑩;張海武;趙家萬(wàn);;電池儲(chǔ)能系統(tǒng)在電力系統(tǒng)中的應(yīng)用[J];電氣開(kāi)關(guān);2008年05期

4 張文亮;丘明;來(lái)小康;;儲(chǔ)能技術(shù)在電力系統(tǒng)中的應(yīng)用[J];電網(wǎng)技術(shù);2008年07期

5 易映萍;徐建烽;肖飛;梁燕;;120kW電池儲(chǔ)能系統(tǒng)雙向DC/DC變換器的研究[J];電源技術(shù);2011年11期

6 謝志佳;馬會(huì)萌;靳文濤;;大規(guī)模電池儲(chǔ)能系統(tǒng)PCS拓?fù)浣Y(jié)構(gòu)分析[J];電力建設(shè);2012年08期

7 袁泉;金新民;曾國(guó)宏;;具備多組電池接入功能的儲(chǔ)能雙向變流器系統(tǒng)[J];電源技術(shù);2013年08期

8 林楚鈞;;電力系統(tǒng)中自動(dòng)化智能技術(shù)的運(yùn)用[J];硅谷;2013年23期

9 李立;劉剛;;多電池組儲(chǔ)能系統(tǒng)雙向DC-DC變換器的研制[J];電力系統(tǒng)保護(hù)與控制;2011年03期

10 李戰(zhàn)鷹;賈旭東;陸志剛;;大容量電池儲(chǔ)能系統(tǒng)實(shí)時(shí)數(shù)字仿真測(cè)試技術(shù)研究[J];南方電網(wǎng)技術(shù);2011年02期

相關(guān)博士學(xué)位論文 前1條

1 仇志凌;基于LCL濾波器的三相三線并網(wǎng)變流器若干關(guān)鍵技術(shù)研究[D];浙江大學(xué);2009年

，

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