本文選題：背靠背變流器　切入點(diǎn)：功率因數(shù)　出處：《北京工業(yè)大學(xué)》2014年碩士論文

【摘要】：隨著能源與環(huán)境問(wèn)題的日益突出，不同地區(qū)的用電負(fù)荷呈現(xiàn)出了多樣性，傳統(tǒng)電網(wǎng)已不能滿足其需求，因此微電網(wǎng)技術(shù)逐漸成為電力、電氣等相關(guān)技術(shù)領(lǐng)域的研究熱點(diǎn)和重點(diǎn)問(wèn)題。作為微電網(wǎng)核心單元的背靠背變流器技術(shù)也得到了廣泛關(guān)注。由于背靠背變流器可以實(shí)現(xiàn)AC-DC-AC兩端能量的可控交互，且具有功率因數(shù)可調(diào)、輸出電流諧波小、能量雙向流動(dòng)等特點(diǎn)，在可再生能源分布式發(fā)電、微電網(wǎng)等領(lǐng)域獲得了廣泛應(yīng)用。本文以三相背靠背變流器控制系統(tǒng)為研究對(duì)象，從理論研究、設(shè)計(jì)調(diào)試及系統(tǒng)實(shí)現(xiàn)等方面進(jìn)行論述。首先，本文在總結(jié)分析三相背靠背變流器現(xiàn)階段的國(guó)內(nèi)外研究現(xiàn)狀與發(fā)展趨勢(shì)的基礎(chǔ)上，根據(jù)系統(tǒng)的性能指標(biāo)要求，進(jìn)行了系統(tǒng)設(shè)計(jì)的可行性分析，進(jìn)而確定了系統(tǒng)的設(shè)計(jì)方案。其次闡述了三相背靠背變流器關(guān)鍵技術(shù)的工作原理，基于坐標(biāo)變換思想，應(yīng)用矢量變換的控制算法、SVPWM調(diào)制技術(shù)，結(jié)合課題采用的交流負(fù)載特性，完成永磁同步電機(jī)的數(shù)學(xué)模型建立與控制策略研究工作�？紤]到系統(tǒng)網(wǎng)側(cè)與負(fù)載側(cè)系統(tǒng)的聯(lián)調(diào)，研究系統(tǒng)啟動(dòng)邏輯控制與系統(tǒng)協(xié)調(diào)控制策略。 在此基礎(chǔ)上，根據(jù)系統(tǒng)設(shè)計(jì)方案，文中對(duì)系統(tǒng)硬件主要參數(shù)計(jì)算與電路設(shè)計(jì)進(jìn)行較為詳細(xì)地說(shuō)明，提出了交流進(jìn)線電抗器與直流穩(wěn)壓電容參數(shù)設(shè)計(jì)方法和主要電路單元的設(shè)計(jì)方案�；谌啾晨勘匙兞髌骺刂撇呗�，以控制器DSP（TMS320F2812）為核心，，設(shè)計(jì)控制系統(tǒng)軟件結(jié)構(gòu)，完成系統(tǒng)軟件程序編寫(xiě)。使用MATLAB Simulink仿真軟件驗(yàn)證系統(tǒng)設(shè)計(jì)的正確性； 最后，文中對(duì)根據(jù)系統(tǒng)實(shí)驗(yàn)要求搭建的三相背靠背變流器系統(tǒng)試驗(yàn)平臺(tái)進(jìn)行介紹，并對(duì)系統(tǒng)整體調(diào)試數(shù)據(jù)和實(shí)時(shí)波形進(jìn)行分析，從而充分驗(yàn)證了課題研究中三相背靠背變流器系統(tǒng)設(shè)計(jì)與控制策略的可行性與正確性。
[Abstract]:With the increasingly prominent energy and environmental problems, different regions of the load presents diversity, the traditional power grid can no longer meet its needs, so micro-grid technology is becoming power. The technology of back-to-back converter, which is the core unit of microgrid, has been paid more and more attention. Because back-to-back converter can realize the controllable interaction of energy between two ends of AC-DC-AC, With the characteristics of adjustable power factor, low output current harmonics, two-way energy flow and so on, it has been widely used in the fields of renewable energy distributed generation, micro-grid, etc. In this paper, the three-phase back-to-back converter control system is taken as the research object. First of all, on the basis of summarizing and analyzing the current domestic and international research status and development trend of three-phase back-to-back converter, according to the performance requirements of the system, this paper discusses the theoretical research, design and debugging, and system implementation. The feasibility of the system design is analyzed, and then the design scheme of the system is determined. Secondly, the working principle of the key technology of the three-phase back-to-back converter is expounded. Based on the idea of coordinate transformation, the SVPWM modulation technology is applied to the control algorithm of vector transformation. Based on the characteristics of AC load, the mathematical model and control strategy of permanent magnet synchronous motor (PMSM) are studied. Considering the connection between system network side and load side system, the system startup logic control and system coordinated control strategy are studied. On this basis, according to the system design scheme, the main parameters calculation and circuit design of the system hardware are described in detail. This paper presents the design method of parameters of AC feed-in reactor and DC voltage stabilized capacitor and the design scheme of main circuit unit. Based on the control strategy of three-phase back-to-back converter, the software structure of control system is designed based on the controller DSPF2812 (TMS320F2812). Complete the system software programming. Use MATLAB Simulink simulation software to verify the correctness of the system design; Finally, the test platform of three-phase back-to-back converter system is introduced, and the debugging data and real-time waveform of the system are analyzed. The feasibility and correctness of the design and control strategy of the three-phase back-to-back converter system are fully verified.
【學(xué)位授予單位】：北京工業(yè)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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