應(yīng)用于微電網(wǎng)的并聯(lián)型有源電力濾波器的研制
本文選題:并聯(lián)型APF 切入點(diǎn):微電網(wǎng) 出處:《廈門大學(xué)》2014年碩士論文
【摘要】:為更好地實(shí)現(xiàn)可再生能源的應(yīng)用并不斷提高能源的有效利用率,越來越多的科技工作者開始關(guān)注微電網(wǎng)這一全新的研究領(lǐng)域,而微電網(wǎng)關(guān)鍵技術(shù)之一——微電網(wǎng)電能質(zhì)量更是受到了廣泛的關(guān)注。本文在闡述微電網(wǎng)概念誕生背景的基礎(chǔ)上,分析了微電網(wǎng)電能質(zhì)量問題及研究現(xiàn)狀,針對應(yīng)用于微電網(wǎng)的有源電力濾波器,提出了具有針對性的諧波阻尼復(fù)合控制和電網(wǎng)電壓前饋控制策略,通過仿真和實(shí)驗(yàn)對本文所提出的算法進(jìn)行了驗(yàn)證。 首先,對應(yīng)用于微電網(wǎng)的有源電力濾波器的拓?fù)浣Y(jié)構(gòu)進(jìn)行了選擇分析,在進(jìn)行數(shù)學(xué)建模與運(yùn)行分析的基礎(chǔ)上,完成了關(guān)鍵元器件的參數(shù)選型,實(shí)現(xiàn)了有源電力濾波器的功率電路。對應(yīng)用于微電網(wǎng)的并聯(lián)型有源電力濾波器的控制系統(tǒng)進(jìn)行了研究,針對微電網(wǎng)的特殊性,提出將電網(wǎng)電壓諧波阻尼控制與前饋控制加入到常規(guī)的電流控制回路中,構(gòu)成復(fù)合控制,以實(shí)現(xiàn)對微電網(wǎng)電壓諧波的抑制與電流控制作用的強(qiáng)化。 隨后,設(shè)計(jì)并實(shí)現(xiàn)了基于TI公司32位定點(diǎn)DSP TMS320F2812的有源電力濾波器的控制系統(tǒng),其中電路設(shè)計(jì)部分主要包括主控芯片DSP及其外部接口、信號采樣和調(diào)理電路、硬件保護(hù)電路等;程序設(shè)計(jì)部分主要介紹了基于DSP/BIOS系統(tǒng)編寫的系統(tǒng)軟件。 最后,設(shè)計(jì)并搭建了包含電網(wǎng)、微源、非線性負(fù)載等的實(shí)驗(yàn)平臺,基于此將本文所述的控制方法應(yīng)用到實(shí)驗(yàn)系統(tǒng)中,實(shí)驗(yàn)結(jié)果和數(shù)據(jù)表明,本文所設(shè)計(jì)的控制算法能夠較好的完成對微電網(wǎng)電流諧波和電壓諧波的補(bǔ)償,并能夠很好的抑制諧振。
[Abstract]:In order to better realize the application of renewable energy and improve the efficiency of energy utilization, more and more scientific and technological workers begin to pay attention to the microgrid, which is a new research field. However, the power quality of microgrid, one of the key technologies of microgrid, has been paid more and more attention. Based on the background of the concept of microgrid, this paper analyzes the power quality of microgrid and its research status. Aiming at active power filter (APF) applied in microgrid, this paper presents a new control strategy of harmonic damping compound control and voltage feedforward control. The proposed algorithm is verified by simulation and experiment. Firstly, the topology of active power filter used in microgrid is selected and analyzed. On the basis of mathematical modeling and operation analysis, the parameter selection of key components is completed. The power circuit of active power filter is realized. The control system of shunt active power filter used in microgrid is studied. It is proposed that the voltage harmonic damping control and feedforward control be added to the conventional current control loop to form a compound control to suppress the voltage harmonics and strengthen the current control of the microgrid. Then, the control system of active power filter based on TI 32-bit fixed-point DSP TMS320F2812 is designed and implemented. The circuit design mainly includes the main control chip DSP and its external interface, signal sampling and conditioning circuit, hardware protection circuit and so on. The part of program design mainly introduces the system software based on DSP/BIOS system. Finally, an experimental platform including power grid, micro-source and nonlinear load is designed and built. Based on this, the control method described in this paper is applied to the experimental system. The experimental results and data show that, The control algorithm designed in this paper can compensate the harmonic and voltage harmonics of microgrid and restrain the resonance well.
【學(xué)位授予單位】:廈門大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:TM761;TN713.8
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