本文選題：主電路設(shè)計(jì) + 開(kāi)環(huán)頻率測(cè)試　； 參考：《華中科技大學(xué)》2015年碩士論文

【摘要】：隨著風(fēng)電、光伏發(fā)電以及潮汐能發(fā)電等分布式發(fā)電的飛速發(fā)展,并網(wǎng)逆變器得到了非常廣泛的研究和應(yīng)用。獨(dú)立式逆變電源在軍事、醫(yī)療、銀行、通訊等領(lǐng)域應(yīng)用同樣廣泛,如何通過(guò)一些簡(jiǎn)單實(shí)用的控制方法來(lái)提高其輸出電能質(zhì)量仍顯得意義重大,本文以一臺(tái)大功率的逆變電源為研究對(duì)象,從輸出電壓波形的控制和負(fù)載擾動(dòng)抑制方面展開(kāi)研究。本文首先對(duì)逆變器的主電路和濾波器進(jìn)行了設(shè)計(jì),接著以狀態(tài)空間平均法建立了逆變器在靜止坐標(biāo)系與同步dq坐標(biāo)系下的數(shù)學(xué)模型,并推導(dǎo)出了逆變器的傳遞函數(shù)和方框圖模型。建立好其數(shù)學(xué)模型后,本文通過(guò)頻率特性測(cè)試得到了等效阻尼、諧振頻率等電路參數(shù),建立了與實(shí)際樣機(jī)一致的控制對(duì)象。在研究逆變器的控制技術(shù)時(shí),以頻率特性測(cè)試建立好的控制對(duì)象為基礎(chǔ),首先對(duì)重復(fù)控制的工作原理、特性判定準(zhǔn)則、設(shè)計(jì)方法做了介紹。接著對(duì)基于PI控制與重復(fù)控制的串聯(lián)結(jié)構(gòu)和并聯(lián)結(jié)構(gòu)兩種復(fù)合控制器進(jìn)行了公式推導(dǎo),再通過(guò)伯德圖對(duì)比及分析,得出了兩種復(fù)合控制器的特點(diǎn)。接著推導(dǎo)了復(fù)合控制器的設(shè)計(jì)方法以及復(fù)合控制系統(tǒng)的動(dòng)穩(wěn)態(tài)特性判定標(biāo)準(zhǔn)。根據(jù)理論分析,本文在Simulink中搭建了仿真模型,同時(shí)也搭建了實(shí)驗(yàn)樣機(jī),通過(guò)仿真和實(shí)驗(yàn)對(duì)復(fù)合控制方法進(jìn)行了驗(yàn)證,論證了復(fù)合控制器的實(shí)效性,也證明了本文關(guān)于復(fù)合控制方法的理論分析是正確的。最后針對(duì)逆變器電源實(shí)際運(yùn)行中可能面臨的短路以及負(fù)載切換等沖擊,為了保障設(shè)備及人生安全,同時(shí)提高設(shè)備持續(xù)供電能力,本文設(shè)計(jì)了對(duì)應(yīng)的軟硬件限流保護(hù)措施,通過(guò)實(shí)驗(yàn)驗(yàn)證了保護(hù)措施的有效性。文章最后針對(duì)逆變器帶載時(shí)存在的穩(wěn)態(tài)誤差和負(fù)載切換時(shí)較大的電壓波動(dòng),本文引入了輸出電流前饋控制,推導(dǎo)出了前饋函數(shù)及前饋控制框圖。由于全前饋函數(shù)復(fù)雜,旋轉(zhuǎn)坐標(biāo)系下存在較強(qiáng)耦合,所以通過(guò)簡(jiǎn)化前饋的方式進(jìn)行補(bǔ)償。最后通過(guò)仿真驗(yàn)證了該簡(jiǎn)化前饋控制方法有效性和實(shí)用性,同時(shí)也驗(yàn)證了之前理論分析的正確性。
[Abstract]:With the rapid development of wind, photovoltaic and tidal power generation, grid-connected inverters have been widely studied and applied. Independent inverter power sources are also widely used in military, medical, banking, communications and other fields. How to improve the output power quality through some simple and practical control methods is still of great significance. In this paper, a high-power inverter is studied from the aspects of output voltage waveform control and load disturbance suppression. In this paper, the main circuit and filter of the inverter are designed firstly, and then the mathematical model of the inverter in the stationary coordinate system and the synchronous dq coordinate system is established by using the state space averaging method. The transfer function and block diagram model of the inverter are derived. After the mathematical model is established, the equivalent damping, resonant frequency and other circuit parameters are obtained through the frequency characteristic test, and the control object is established in accordance with the actual prototype. In the study of inverter control technology, based on the established control object of frequency characteristic test, the working principle, characteristic criterion and design method of repetitive control are introduced. Then, the formulas of two kinds of composite controllers based on Pi control and repetitive control are deduced, and the characteristics of the two kinds of composite controllers are obtained through the comparison and analysis of the Byrd diagram. Then, the design method of the composite controller and the criterion of the dynamic and steady characteristics of the composite control system are deduced. According to the theoretical analysis, the simulation model is built in Simulink, and the experimental prototype is also built. The method of compound control is verified by simulation and experiment, and the effectiveness of the composite controller is proved. It is also proved that the theoretical analysis of the compound control method in this paper is correct. Finally, aiming at the impact of short circuit and load switching in the actual operation of inverter power supply, in order to ensure the safety of equipment and life, and to improve the ability of continuous power supply of the equipment, the corresponding current limiting protection measures of hardware and software are designed in this paper. The effectiveness of the protective measures is verified by experiments. Finally, aiming at the steady state error of inverter with load and the large voltage fluctuation during load switching, this paper introduces the output current feedforward control, and deduces the feedforward function and feedforward control block diagram. Because of the complexity of the full feedforward function and the strong coupling in the rotating coordinate system, the compensation is carried out by simplifying the feedforward method. Finally, the effectiveness and practicability of the simplified feedforward control method are verified by simulation, and the correctness of the previous theoretical analysis is also verified.
【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TM464

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 涂金龍;;一種簡(jiǎn)易逆變器輸出波形的改善[J];電工技術(shù);1994年07期

2 陳良亮,肖嵐,胡文斌,嚴(yán)仰光;逆變器輸出電壓直流分量產(chǎn)生原因與抑制方法[J];電力電子技術(shù);2003年05期

3 陳維;郭必廣;;正弦逆變器輸出短路過(guò)流保護(hù)設(shè)計(jì)[J];科技信息;2009年17期

4 任仁良,焦曉明;逆變器輸出波形失真度的單片機(jī)測(cè)量研究[J];儀器儀表學(xué)報(bào);2000年02期

5 王丹;姜建國(guó);;逆變器輸出無(wú)源濾波器的拓?fù)浣Y(jié)構(gòu)和濾波特點(diǎn)[J];電氣自動(dòng)化;2008年06期

6 陳增祿;施杰;溫宗周;王兆安;;高精度寬頻帶逆變器輸出直流漂移控制的一種新方法[J];電工技術(shù)學(xué)報(bào);2005年12期

7 王勝永;馬殿光;史戰(zhàn)國(guó);張秀彬;;光伏并網(wǎng)逆變器輸出能量最大化的設(shè)計(jì)方法[J];電力電子技術(shù);2012年09期

8 張景盧;王惠立;;雙邊對(duì)稱三角波正弦波調(diào)制逆變器輸出電壓頻譜的分析[J];大連鐵道學(xué)院學(xué)報(bào);1982年03期

9 齊保良;牟善軍;;一種改善逆變器輸出波形的方法[J];山東建筑大學(xué)學(xué)報(bào);2011年04期

10 陳X;陳昌旺;劉滌塵;;光伏并網(wǎng)逆變器輸出電壓直流分量的瞬時(shí)補(bǔ)償策略[J];電網(wǎng)技術(shù);2013年11期

相關(guān)會(huì)議論文 前4條

1 崔博文;任章;陳劍;陳心昭;;基于復(fù)參數(shù)最小二乘估計(jì)的逆變器輸出信號(hào)處理[A];第二十四屆中國(guó)控制會(huì)議論文集（上冊(cè)）[C];2005年

2 陳良亮;曾忠;丁志剛;;死區(qū)對(duì)開(kāi)環(huán)和閉環(huán)控制SPWM逆變器輸出基波電壓的影響[A];2006中國(guó)電工技術(shù)學(xué)會(huì)電力電子學(xué)會(huì)第十屆學(xué)術(shù)年會(huì)論文摘要集[C];2006年

3 張侃;徐殿國(guó);高強(qiáng);;PWM逆變器輸出無(wú)源共模濾波器[A];2006中國(guó)電工技術(shù)學(xué)會(huì)電力電子學(xué)會(huì)第十屆學(xué)術(shù)年會(huì)論文摘要集[C];2006年

4 鄭雪生;李春文;湯洪海;戎袁杰;;不間斷電源逆變器輸出電壓的魯棒跟蹤控制[A];第二十六屆中國(guó)控制會(huì)議論文集[C];2007年

相關(guān)碩士學(xué)位論文 前6條

1 李鑫;三相三線制逆變器輸出電壓不平衡控制的研究[D];哈爾濱理工大學(xué);2016年

2 李冬冬;逆變器輸出波形復(fù)合控制技術(shù)[D];華中科技大學(xué);2015年

3 譚麗平;逆變器輸出濾波器設(shè)計(jì)及電感分析研究[D];長(zhǎng)沙理工大學(xué);2011年

4 王立建;離網(wǎng)光伏并聯(lián)逆變器輸出電能質(zhì)量控制技術(shù)研究[D];重慶大學(xué);2012年

5 馬炯;逆變器輸出濾波電感的損耗分析與測(cè)試研究[D];浙江大學(xué);2014年

6 宋術(shù)全;采用SABER軟件對(duì)逆變器輸出LC濾波的仿真[D];鐵道部科學(xué)研究院;2005年

，

本文編號(hào)：2053519