三相三線制有源電力濾波器控制策略研究
[Abstract]:With the continuous development of intelligence and modernization of power grid, more and more electrical equipment with low power factors, nonlinear and unbalanced characteristics are connected to the power grid, which makes the transient impact, high order harmonics, three-phase imbalance and other problems more and more serious. Therefore, the treatment of power quality is imperative. As a new device to improve power quality, active power filter (Active power filter,APF) has many advantages, such as fast dynamic response, high compensation precision, not easy to occur resonance and so on. In this paper, APF harmonic current detection method, current loop control strategy, DC side voltage control strategy and other key technologies affecting the performance of APF are studied in depth. Fast and accurate detection of harmonic current is the premise of active power filter filtering performance. Based on the analysis of traditional FBD harmonic current detection method, this paper points out the internal relationship between FBD method and ip-iq method, and combines the two methods with each other. In view of the shortcomings of traditional FBD detection, an improved FBD detection method is proposed. In this method, the positive sequence component of fundamental voltage is extracted by generalized Integrator, and the moving mean filtering method is used to replace the traditional low-pass filter to avoid the lag error caused by low-pass filter. The effectiveness of the proposed method is verified by simulation. The current loop control of active power filter (APF) requires that the compensation current can track the command current signal quickly and accurately. In this paper, an improved repetitive control based on general internal model is proposed for pk?1 subharmonics. It can selectively suppress harmonics according to the state of the load and adjust the compensation range of repetitive control. In view of the disadvantage that PI control is difficult to realize zero-difference tracking, the parallel repetitive PI compound control strategy is used to track the command current without difference. Aiming at the defect of accurate modeling of deadbeat control dependent system, the repeated deadbeat compound control strategy in series is used to eliminate the periodic steady-state error. The two control strategies are simulated and analyzed respectively, and the feasibility of the compound control strategy is verified by simulation. In order to reduce the compensation effect of APF caused by voltage fluctuation, a voltage follower is used to make the DC side voltage change with the fluctuation of power network voltage, so as to improve the compensation effect of APF. In this paper, the current loop control strategy of three-phase three-wire active power filter is studied experimentally. the two composite control strategies proposed in this paper are verified by experiments, and the effectiveness of the composite control strategy based on general internal model is verified by experiments.
【學(xué)位授予單位】:江蘇大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:TM761
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 鄭遠(yuǎn)輝;楊蘋;王月武;唐鋮;;基于重復(fù)控制的有源電力濾波器6k±1次諧波補(bǔ)償[J];電力系統(tǒng)自動化;2016年16期
2 馬興;劉會金;崔雪;郭曉云;汪文達(dá);;基于預(yù)測控制與H∞控制的有源電力濾波器設(shè)計[J];電工技術(shù)學(xué)報;2016年03期
3 張宸宇;梅軍;鄭建勇;周福舉;郭邵卿;;基于內(nèi)置重復(fù)控制器改進(jìn)無差拍的有源濾波器雙滯環(huán)控制方法[J];電工技術(shù)學(xué)報;2015年22期
4 鄭天云;鄭一超;霍成義;;光伏并網(wǎng)發(fā)電的諧波危害及對策[J];電源技術(shù);2015年11期
5 王弋飛;朱靜;李俠;魏泉;;基于PI和重復(fù)控制的并網(wǎng)逆變器復(fù)合控制方案研究[J];高壓電器;2015年07期
6 劉秀蘭;欒逢時;;電力諧波對電力系統(tǒng)的影響及治理方法[J];電氣應(yīng)用;2015年S1期
7 李達(dá)義;楊凱;孫玉鴻;熊博;;一種新型串聯(lián)混合型有源電力濾波器[J];電力系統(tǒng)自動化;2015年06期
8 董愛華;康小燕;;一種改進(jìn)的i_p-i_q無功電流檢測方法研究[J];計算機(jī)仿真;2015年03期
9 史麗萍;蔡儒軍;陳麗兵;王攀攀;;三相三線制有源濾波器的改進(jìn)無差拍控制[J];電力系統(tǒng)保護(hù)與控制;2014年14期
10 姚建剛;吳昊;李曉海;;基于FBD任意次諧波電流檢測新方法[J];電力系統(tǒng)及其自動化學(xué)報;2014年05期
相關(guān)博士學(xué)位論文 前5條
1 王裕;三相四線制有源電力濾波器關(guān)鍵技術(shù)研究[D];華南理工大學(xué);2015年
2 李剛;新型并聯(lián)混合型有源電力濾波器關(guān)鍵技術(shù)的研究[D];中南大學(xué);2014年
3 劉聰;并聯(lián)型有源電力濾波器諧波抑制性能優(yōu)化技術(shù)研究[D];華中科技大學(xué);2014年
4 周娟;四橋臂有源電力濾波器關(guān)鍵技術(shù)研究[D];中國礦業(yè)大學(xué);2011年
5 謝斌;并聯(lián)型有源電力濾波器諧波檢測及控制技術(shù)研究[D];華中科技大學(xué);2010年
相關(guān)碩士學(xué)位論文 前10條
1 楊智杰;基于復(fù)合控制的并聯(lián)型有源濾波器的研究[D];太原理工大學(xué);2015年
2 王瑤;有源電力濾波器中諧波檢測方法的研究[D];鄭州大學(xué);2014年
3 朱慧;三相并聯(lián)型有源電力濾波器的雙閉環(huán)控制策略研究[D];中國礦業(yè)大學(xué);2014年
4 倪建洵;有源電力濾波器中重復(fù)控制研究[D];浙江大學(xué);2013年
5 陳云飛;三相三線制并聯(lián)型有源電力濾波器關(guān)鍵技術(shù)的研究與實現(xiàn)[D];合肥工業(yè)大學(xué);2012年
6 許明夏;基于內(nèi)模原理的有源電力濾波器研究[D];浙江大學(xué);2012年
7 張進(jìn);并聯(lián)型三相三線制有源電力濾波器的重復(fù)控制研究[D];大連理工大學(xué);2011年
8 葛帥;APF直流側(cè)電壓控制技術(shù)的研究[D];東北大學(xué);2011年
9 李彥龍;低壓系統(tǒng)混合有源電力濾波器研究[D];華中科技大學(xué);2011年
10 宋沖;重復(fù)控制在有源電力濾波器中的應(yīng)用[D];浙江大學(xué);2008年
,本文編號:2472719
本文鏈接:http://sikaile.net/kejilunwen/dianlidianqilunwen/2472719.html