本文選題：雙向DC/DC變換器　切入點(diǎn)：倍流　出處：《武漢理工大學(xué)》2014年碩士論文

【摘要】：雙向DC/DC變換器在電動(dòng)汽車、電能質(zhì)量調(diào)節(jié)、儲(chǔ)能系統(tǒng)和可再生能源發(fā)電等領(lǐng)域具有廣闊的應(yīng)用前景。本文以微電網(wǎng)儲(chǔ)能為應(yīng)用背景，對一種全橋倍流雙向DC/DC變換器的控制方法進(jìn)行較為深入的研究。 本文首先概述雙向DC/DC變換器的應(yīng)用前景和研究意義，比較分析了幾種典型的雙向DC/DC變換拓?fù)浣Y(jié)構(gòu)，，選擇一種電壓-電流型全橋倍流電路作為光伏微電網(wǎng)儲(chǔ)能雙向DC/DC變換器的主電路拓?fù)洌辉撾p向DC/DC變換器的低壓側(cè)接儲(chǔ)能電池組，為倍流整流結(jié)構(gòu)，兩個(gè)濾波電感電流交錯(cuò)并聯(lián)，有效減小電池電流紋波，高壓側(cè)為全橋結(jié)構(gòu)，接直流母線。針對變換器電流源端的啟動(dòng)問題，在電感上增加反激繞組的方式實(shí)現(xiàn)電路的軟啟動(dòng)。本文還分析了全橋倍流雙向DC/DC變換器在各模態(tài)下的工作原理和電氣特性，并進(jìn)行了原理性仿真。 其次，建立了全橋倍流雙向DC/DC變換器主電路數(shù)學(xué)模型。討論了環(huán)路控制器的類型選擇，確定用電感電流反饋?zhàn)鳛閮?nèi)環(huán)、用端口電壓反饋?zhàn)鳛橥猸h(huán)的雙環(huán)控制策略。由于雙向DC/DC變換器存在Buck和Boost兩種主要的工作狀態(tài)，在這兩種工作狀態(tài)下，主電路的小信號模型存在明顯差異，本文根據(jù)電路的具體工作狀態(tài)不同，給出相應(yīng)的電流內(nèi)環(huán)和電壓外環(huán)的控制框圖，并對環(huán)路控制器參數(shù)進(jìn)行詳細(xì)設(shè)計(jì)。 微電網(wǎng)儲(chǔ)能雙向DC/DC變換器存在多種工作模態(tài)，本文采用多模態(tài)控制技術(shù)，詳細(xì)分析各種模態(tài)之間的切換條件，設(shè)計(jì)相應(yīng)的模態(tài)切換邏輯。雙向DC/DC變換器的開關(guān)管驅(qū)動(dòng)邏輯復(fù)雜，工作狀態(tài)頻繁切換，控制算法復(fù)雜，本文采用DSP TMS320F28069設(shè)計(jì)了數(shù)字控制系統(tǒng)。本文還詳細(xì)論述了全橋倍流雙向DC/DC變換器的主電路設(shè)計(jì)，包括主功率變壓器、電感設(shè)計(jì)，濾波電容的選型以及主電路中開關(guān)管的選型等。 最后，用PSIM中的C語言模塊實(shí)現(xiàn)變換器的數(shù)字控制系統(tǒng)，對全橋倍流雙向DC/DC變換器進(jìn)行了系統(tǒng)仿真分析。設(shè)計(jì)制作了實(shí)驗(yàn)樣機(jī)，并進(jìn)行實(shí)驗(yàn)研究。仿真結(jié)果和實(shí)驗(yàn)結(jié)果均表明，所研究的全橋倍流雙向DC/DC變換器具有良好的穩(wěn)態(tài)和動(dòng)態(tài)性能。
[Abstract]:Bidirectional DC/DC converters have broad application prospects in electric vehicles, power quality regulation, energy storage systems and renewable energy generation. The control method of a full bridge double current bidirectional DC/DC converter is studied in detail. In this paper, the application prospect and research significance of bidirectional DC/DC converter are summarized, and several typical bidirectional DC/DC converter topologies are compared and analyzed. A voltage-current-mode full-bridge current-doubling circuit is selected as the main circuit topology of the photovoltaic microgrid energy storage bidirectional DC/DC converter, which has a low-voltage side energy storage battery pack with a current-doubling rectifier structure, and two filter inductors are staggered in parallel. The current ripple of the battery is reduced effectively, the high voltage side is a bridge structure, and the DC bus is connected. The soft start of the circuit is realized by adding flyback winding to inductance. The operating principle and electrical characteristics of full bridge double current bidirectional DC/DC converter are analyzed in this paper, and the principle simulation is carried out. Secondly, the mathematical model of the main circuit of the full bridge double current bidirectional DC/DC converter is established, the type selection of the loop controller is discussed, and the inductance current feedback is used as the inner loop. The port voltage feedback is used as the double loop control strategy of the outer loop. Due to the existence of two main working states of Buck and Boost in the bi-directional DC/DC converter, the small signal model of the main circuit is obviously different in these two working states. According to the different working state of the circuit, the control block diagram of the current inner loop and the voltage outer loop are given in this paper, and the parameters of the loop controller are designed in detail. There are many operating modes in the bidirectional DC/DC converter for microgrid energy storage. In this paper, the switching conditions between different modes are analyzed in detail by using multi-mode control technology. The switch tube driving logic of bi-directional DC/DC converter is complex, the operation state is frequently switched, and the control algorithm is complex. In this paper, the digital control system is designed with DSP TMS320F28069, and the main circuit design of the full bridge double current bi-directional DC/DC converter is discussed in detail, including the main power transformer, inductance design, filter capacitance selection and switch transistor selection in the main circuit. Finally, the digital control system of the converter is realized by C language module in PSIM, and the system simulation analysis of the full bridge double current bidirectional DC/DC converter is carried out, and the experimental prototype is designed and manufactured. The simulation results and experimental results show that the proposed full-bridge current-doubling bi-directional DC/DC converter has good steady-state and dynamic performance.
【學(xué)位授予單位】：武漢理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM46

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 張方華,嚴(yán)仰光;推挽正激移相式雙向DC-DC變換器[J];電工技術(shù)學(xué)報(bào);2004年12期

2 肖華鋒;謝少軍;;一端穩(wěn)壓一端穩(wěn)流型軟開關(guān)雙向DC/DC變換器(Ⅰ)——電路原理和控制策略[J];電工技術(shù)學(xué)報(bào);2006年10期

3 趙修科;;第5講 功率變壓器設(shè)計(jì)[J];電源技術(shù)應(yīng)用;2007年11期

4 許海平,溫旭輝,孔力;全數(shù)字化雙向DC/DC變換器的分析和設(shè)計(jì)[J];電力電子技術(shù);2003年06期

5 許海平;孫昌富;馬剛;溫旭輝;孔力;;基于DSP的燃料電池車用雙向DC-DC變換器的研究[J];電氣自動(dòng)化;2004年03期

6 李平;何益宏;龔仁喜;;雙向直流變換器的發(fā)展現(xiàn)狀[J];廣西師范學(xué)院學(xué)報(bào)(自然科學(xué)版);2006年02期

7 劉方霆;王永攀;朱忠尼;宋慶國;張成勝;;兩路交錯(cuò)并聯(lián)DC/DC變換器軟開關(guān)自適應(yīng)控制策略研究[J];電力電子;2013年03期

8 劉繼東;韓學(xué)山;韓偉吉;張利;;分時(shí)電價(jià)下用戶響應(yīng)行為的模型與算法[J];電網(wǎng)技術(shù);2013年10期

9 高明遠(yuǎn);;雙向DC-DC變換器基于切換系統(tǒng)的建模與儲(chǔ)能控制[J];電力系統(tǒng)保護(hù)與控制;2012年03期

10 朱成花,張方華,嚴(yán)仰光;兩端穩(wěn)壓軟開關(guān)雙向BUCK/BOOST變換器研究[J];南京航空航天大學(xué)學(xué)報(bào);2004年02期

相關(guān)博士學(xué)位論文 前1條

1 曾杰;可再生能源發(fā)電與微網(wǎng)中儲(chǔ)能系統(tǒng)的構(gòu)建與控制研究[D];華中科技大學(xué);2009年

本文編號：1691551