本文選題：電動(dòng)汽車V2G技術(shù) + 雙向變換器　； 參考：《浙江大學(xué)》2014年碩士論文

【摘要】：隨著智能電網(wǎng)和電動(dòng)汽車技術(shù)的發(fā)展,電動(dòng)汽車V2G技術(shù)成為研究熱點(diǎn)。所謂V2G技術(shù),其核心思想是利用大量電動(dòng)汽車充放電補(bǔ)償由于可再生能源系統(tǒng)接入電網(wǎng)而帶來(lái)的波動(dòng)。電力電子裝置是V2G技術(shù)中的核心和指令執(zhí)行裝置。其必須能夠?qū)崿F(xiàn)功率的雙向流動(dòng),執(zhí)行智能電網(wǎng)指令進(jìn)行快速調(diào)節(jié),控制輸入輸出電能質(zhì)量。對(duì)于車載充放電器,還應(yīng)具有高功率密度、長(zhǎng)壽命等特點(diǎn)。因此,車載用雙向變換器設(shè)計(jì)技術(shù)難度大,具有重要研究?jī)r(jià)值。 論文緒論部分簡(jiǎn)要介紹了V2G系統(tǒng)的概念及其對(duì)電網(wǎng)的影響,對(duì)V2G技術(shù)在國(guó)內(nèi)外的實(shí)踐和面臨的問(wèn)題進(jìn)行了綜述。重點(diǎn)闡述了V2G技術(shù)中電力電子裝置的位置、作用和拓?fù)浣Y(jié)構(gòu),給出了一種兩級(jí)式拓?fù)浣Y(jié)構(gòu)。然后,對(duì)國(guó)內(nèi)外雙向變換器的研究熱點(diǎn)和發(fā)展趨勢(shì)進(jìn)行了分析,闡述了本課題的研究?jī)?nèi)容和主要工作。 論文第二章內(nèi)容集中在兩級(jí)式變換器中雙向AC-DC級(jí)參數(shù)設(shè)計(jì)、電路設(shè)計(jì)和損耗分析上。首先分析了電路的基本工作原理與運(yùn)行模式,對(duì)電路的基本參數(shù)進(jìn)行了計(jì)算與選定。效率優(yōu)化方面,計(jì)算了充電模式與放電模式的功率損耗,分析主要功耗的組成,使用SiC二極管提升了系統(tǒng)整體效率。最后,對(duì)數(shù)字控制器資源分配和流程進(jìn)行了設(shè)計(jì)。 論文第三章重點(diǎn)研究了雙向AC-DC變換器的控制策略。對(duì)比分析了幾種可能實(shí)現(xiàn)PFC和并網(wǎng)逆變的控制策略,仿真比較了其優(yōu)劣勢(shì)。最終選擇了基于占空比預(yù)測(cè)的數(shù)字PFC控制策略和準(zhǔn)比例諧振控制器。在此基礎(chǔ)上,設(shè)計(jì)控制環(huán)補(bǔ)償器,對(duì)系統(tǒng)的動(dòng)態(tài)、穩(wěn)態(tài)性能進(jìn)行仿真和實(shí)驗(yàn)驗(yàn)證。此外,本章還對(duì)軟件鎖相環(huán)和獨(dú)立運(yùn)行逆變器進(jìn)行了闡述和設(shè)計(jì)。 論文第四章研究了應(yīng)用在電動(dòng)汽車V2G技術(shù)中的功率解耦技術(shù)。對(duì)電流能大幅度變動(dòng)的電池負(fù)載和普通負(fù)載分別給出了解耦控制策略。在此基礎(chǔ)上提出改進(jìn)型相位補(bǔ)償和幅度補(bǔ)償控制。分析了解耦的工作工程,設(shè)計(jì)和仿真驗(yàn)證了理論的正確性。 第五章是本文整體系統(tǒng)的一種優(yōu)化技術(shù)。提出了無(wú)吸收電路的軟開(kāi)關(guān)技術(shù),該技術(shù)在不增加其他元件的基礎(chǔ)上,利用副邊調(diào)制,實(shí)現(xiàn)軟開(kāi)關(guān)。文章給出了仿真結(jié)果,證明了該技術(shù)的有效性。 最后基于本文工作,對(duì)基于電動(dòng)汽車V2G技術(shù)的雙向變換器系統(tǒng)設(shè)計(jì)做出了總結(jié)和展望。
[Abstract]:With the development of smart grid and electric vehicle technology, the V2G technology of electric vehicle has become a hot topic. The core idea of the so-called V2G technology is to use a large number of electric vehicles to compensate for the fluctuation of the renewable energy system to access the power grid. The power electronic device is the core of the V2G technology and the instruction execution device. In order to realize the two-way flow of power, execute the instruction of smart grid for fast adjustment and control the power quality of input and output, it should also have the characteristics of high power density and long life for the vehicle charging and discharging equipment. Therefore, the design of two-way converter in vehicle is of great difficulty and has important research value.
The introduction part of the paper briefly introduces the concept of V2G system and its influence on the power grid, summarizes the practice and problems of V2G technology at home and abroad. It focuses on the position, function and topology of the power electronic device in V2G technology, and gives a kind of two stage extension structure. Then, the research on two-way converter at home and abroad. The hotspots and development trends are analyzed, and the research contents and main tasks of this subject are expounded.
The second chapter of the paper focuses on the design of two direction AC-DC level parameters, circuit design and loss analysis in the two stage converter. First, the basic principle and operation mode of the circuit are analyzed. The basic parameters of the circuit are calculated and selected. The efficiency optimization is used to calculate the power loss of the charging mode and discharge mode, and the main analysis is made. The composition of power consumption, the use of SiC diode to enhance the overall efficiency of the system. Finally, the digital controller resource allocation and process design.
The third chapter of the paper focuses on the control strategy of bidirectional AC-DC converter, compares and analyzes several control strategies that may realize PFC and grid inverter. The simulation compares its advantages and disadvantages. Finally, it selects the digital PFC control strategy based on the duty cycle ratio and the quasi proportional resonant controller. On this basis, the control loop compensator is designed and the system is designed. The dynamic and steady performance of the system is verified by simulation and experiment. In addition, the software phase locked loop and the independent running inverter are also described and designed in this chapter.
The fourth chapter of the paper studies the power decoupling technology used in the V2G technology of electric vehicle. The decoupling control strategy is given for the battery load and the ordinary load which can greatly change the current. On this basis, the improved phase compensation and amplitude compensation control are proposed. Correctness.
The fifth chapter is an optimization technique of the whole system. The soft switching technology of the non absorption circuit is put forward. The technology can realize soft switch by using side modulation without adding other components. The simulation results are given and the effectiveness of the technology is proved.
Finally, based on the work in this paper, we summarize and prospect the design of bi-directional converter system based on V2G technology of electric vehicle.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM46

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本文編號(hào)：1952078