本文選題：三電平有源濾波器　切入點(diǎn)：SPWM　出處：《南昌航空大學(xué)》2017年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：隨著電力電子技術(shù)的飛速發(fā)展,非線性電子裝置的應(yīng)用越來(lái)越廣泛,電網(wǎng)中的諧波污染也隨著越發(fā)嚴(yán)重。治理電網(wǎng)諧波污染,改善電能質(zhì)量逐漸成為當(dāng)下研究熱點(diǎn)。有源電力濾波器在消除電網(wǎng)諧波污染方面,有著優(yōu)良的性能,因此備受青睞,應(yīng)用前景十分廣闊。本文緊緊圍繞三電平有源電力濾波器展開(kāi)研究。首先介紹三電平有源電力濾波器的基本工作原理,并就三電平連續(xù)空間矢量脈寬調(diào)制(Continuous Space Vector Pulse Modulation,CSVPWM)進(jìn)行分析。本文具體分析了三電平連續(xù)空間矢量脈寬調(diào)制(CSVPWM),同時(shí)對(duì)降低開(kāi)關(guān)損耗的不連續(xù)空間矢量調(diào)制(DSVPWM)及其箝位電平方法進(jìn)行分析,得到三種不同的電平箝位方法。針對(duì)二極管中點(diǎn)箝位型(Neutral Point Clamped,NPC)三電平拓?fù)渲悬c(diǎn)電壓?jiǎn)栴},總結(jié)出SVPWM調(diào)制下三電平中點(diǎn)電壓的控制方法。然后以零序電壓分量為橋梁,建立SVPWM與正弦脈寬調(diào)制(Sine Pulse Width Modulation,SPWM)之間的等效關(guān)系。在SPWM調(diào)制下,使用平均開(kāi)關(guān)模型得到中點(diǎn)電壓與中點(diǎn)電流之間的表達(dá)式,并以此為突破口獲得零序電壓分量與中點(diǎn)電壓偏差之間的關(guān)系,從而設(shè)計(jì)一種中點(diǎn)電壓控制器(Neutral Point Voltage Controller,NPVC),并結(jié)合最大電流不開(kāi)關(guān)對(duì)注入的零序電壓分量進(jìn)行優(yōu)化。其次,針對(duì)LCL濾波器的諧振問(wèn)題,分析典型抑制LCL諧振的無(wú)源阻尼和有源阻尼方法,提出一種在以逆變側(cè)電流為反饋控制量的基礎(chǔ)上,引入網(wǎng)側(cè)電流環(huán)的有源阻尼方法。由于有源電力濾波器補(bǔ)償?shù)碾娏鳛橹C波電流,因此本文對(duì)逆變側(cè)電流環(huán)采用比例積分和重復(fù)控制并聯(lián)的復(fù)合控制策略以增加對(duì)諧波電流補(bǔ)償效果。最后,搭建一臺(tái)額定容量為30KVA的三電平有源電力濾波器樣機(jī),在實(shí)驗(yàn)樣機(jī)上對(duì)本文提出的方法進(jìn)行相關(guān)實(shí)驗(yàn)。實(shí)驗(yàn)結(jié)果表明本文所提方法能有效控制三電平拓?fù)渲悬c(diǎn)電壓和抑制LCL諧振。
[Abstract]:With the rapid development of power electronics technology, the application of nonlinear electronic devices is becoming more and more extensive, and the harmonic pollution in the power network is becoming more and more serious. The improvement of power quality has gradually become the focus of current research. Active power filter has excellent performance in eliminating harmonic pollution of power network, so it is very popular. The application prospect is very broad. This paper focuses on the research of three-level active power filter. Firstly, the basic principle of three-level active power filter is introduced. The continuous Space Vector Pulse modulation (CSVPWM) is analyzed. The three-level CSVPWM (continuous Space Vector Pulse Modulation) is analyzed in detail, and the discontinuous space vector modulation (DSVPWM), which reduces the switching loss, and its clamping are analyzed in detail. The level method is used to analyze, Three different level clamping methods are obtained. In order to solve the neutral point voltage problem in diode neutral Point Clampedn three-level topology, the control method of three-level neutral point voltage under SVPWM modulation is summarized, and the zero-sequence voltage component is used as a bridge. The equivalent relationship between SVPWM and Sine Pulse Width Modulation (SPWM) is established. Under SPWM modulation, the expression between midpoint voltage and midpoint current is obtained by using the average switching model. The relationship between the zero-sequence voltage component and the midpoint voltage deviation is obtained, and a neutral Point Voltage controller is designed to optimize the zero-sequence voltage component with the maximum current non-switch. Aiming at the resonance problem of LCL filter, the passive damping and active damping methods for suppressing LCL resonance are analyzed, and a feedback control method based on the inverter side current is proposed. The active damping method of grid-side current loop is introduced. Because the current compensated by active power filter is harmonic current, In order to increase the compensation effect of harmonic current, a three-level active power filter prototype with rated capacity of 30 KVA is built. The experimental results show that the proposed method can effectively control the three-level topology neutral-point voltage and suppress the LCL resonance.
【學(xué)位授予單位】：南昌航空大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TM761

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 劉寶泉;郭華;朱一昕;易皓;卓放;;三相變流器無(wú)源阻尼型LCL濾波器的分析與設(shè)計(jì)[J];電工技術(shù)學(xué)報(bào);2017年02期

2 羅曉飛;孫彥廣;宋克儉;石志學(xué);;應(yīng)用于NPC型逆變器的三電平不連續(xù)PWM方法[J];工程科學(xué)學(xué)報(bào);2016年04期

3 張百樂(lè);王久和;趙鳳姣;;TNPC型光伏并網(wǎng)逆變器的PCHD建模與控制[J];中國(guó)電機(jī)工程學(xué)報(bào);2014年S1期

4 陳新;韋徵;胡雪峰;陳軼涵;龔春英;;三相并網(wǎng)逆變器LCL濾波器的研究及新型有源阻尼控制[J];電工技術(shù)學(xué)報(bào);2014年06期

5 李寧;王躍;雷萬(wàn)鈞;王兆安;;三電平NPC變流器SVPWM策略與SPWM策略的等效關(guān)系研究[J];電網(wǎng)技術(shù);2014年05期

6 彭秋波;盤(pán)宏斌;劉勇;向禮丹;;LCL型三相并網(wǎng)逆變器雙閉環(huán)解耦控制器設(shè)計(jì)[J];電工技術(shù)學(xué)報(bào);2014年04期

7 王海松;王晗;張建文;蔡旭;;LCL型并網(wǎng)逆變器的分裂電容無(wú)源阻尼控制[J];電網(wǎng)技術(shù);2014年04期

8 孫曙光;王景芹;杜太行;金少華;;有源電力濾波器控制技術(shù)的研究與應(yīng)用[J];電力電子技術(shù);2014年03期

9 李寧;王躍;蔣應(yīng)偉;雷萬(wàn)鈞;王兆安;;三電平NPC變流器虛擬空間矢量調(diào)制策略與載波調(diào)制策略的內(nèi)在關(guān)系研究[J];電網(wǎng)技術(shù);2014年01期

10 湯賜;;基于LCL輸出濾波器的并網(wǎng)逆變器四種PI控制器設(shè)計(jì)方法[J];電網(wǎng)技術(shù);2013年11期

相關(guān)博士學(xué)位論文 前2條

1 陳兆嶺;有源電力濾波器諧波電流檢測(cè)與跟蹤控制研究[D];江蘇大學(xué);2013年

2 張穎;電力系統(tǒng)諧波與電壓擾動(dòng)檢測(cè)理論及方法研究[D];湖南大學(xué);2011年

相關(guān)碩士學(xué)位論文 前5條

1 徐和義;三相并聯(lián)有源電力濾波器的研究[D];合肥工業(yè)大學(xué);2013年

2 藺相斌;基于雙DSP的三相四線制有源電力濾波器的研究[D];山東科技大學(xué);2011年

3 劉鑫正;具有光伏發(fā)電功能的并聯(lián)型有源電力濾波器的研究[D];山東大學(xué);2009年

4 谷鑫;基于有功功率平衡和蟻群算法優(yōu)化PI參數(shù)的有源濾波器[D];天津大學(xué);2006年

5 趙莉;基于三電平逆變器的異步電動(dòng)機(jī)直接轉(zhuǎn)矩控制[D];中國(guó)科學(xué)院研究生院（電工研究所）;2005年

，

本文編號(hào)：1591747