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  本文關(guān)鍵詞： 有源電力濾波 三相三線 雙同步解耦鎖相 SVPWM DSP處理器　出處：《西南交通大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：面對大量非線性負(fù)載及電力電子變流器設(shè)備和其他諧波源帶來的對電網(wǎng)越來越廣泛的諧波污染,采用有源電力濾波器(Active Power Filter APF)抑制諧波必將是今后諧波治理的一個重要的發(fā)展方向。有源電力濾波器具有動態(tài)性能好,能夠靈活的根據(jù)諧波源狀態(tài)自動調(diào)整等優(yōu)點(diǎn),在電能質(zhì)量調(diào)節(jié)方面具有很廣闊的應(yīng)用前景。隨著理論研究的進(jìn)一步深入,電力電子器件容量和開關(guān)頻率的進(jìn)一步提高以及數(shù)字信號處理器運(yùn)算能力進(jìn)一步增強(qiáng),有源電力濾波器的容量及實(shí)時補(bǔ)償實(shí)時性將進(jìn)一步得到提高。本文主要對三相三線并聯(lián)型有源電力濾波器的諧波檢測算法及其控制策略從以下幾個方面進(jìn)行了探討、分析和研究：首先,對諧波問題及其抑制措施進(jìn)行了簡要介紹,指出了有源電力濾波器對諧波抑制及電能質(zhì)量提高的重要意義。介紹了目前常用的有源電力濾波器的基本原理、常見結(jié)構(gòu)、諧波檢測方法、電流跟蹤控制策略及其應(yīng)用場合。分析發(fā)現(xiàn)三相三線并聯(lián)型有源電力濾波器有著更普遍的適用性和良好的應(yīng)用前景。其次,深入研究了由瞬時無功功率理論衍生出的pq法和ip-iq兩種諧波檢測算法,對兩種方法的諧波檢測效果進(jìn)行了對比。分析發(fā)現(xiàn)當(dāng)電壓畸變的時候pq法存在的誤差和不足以及此時ip-iq法表現(xiàn)出的的優(yōu)點(diǎn),指出了鎖相環(huán)是避免電壓畸變導(dǎo)致諧波檢測誤差的關(guān)鍵。為此對鎖相環(huán)進(jìn)行了深入研究,簡要介紹了幾種常用的鎖相環(huán)。對典型的基于單同步坐標(biāo)的三相鎖相環(huán)進(jìn)行了深入研究,指出其在三相電壓畸變不平衡時的誤差和不足,為此引入了基于雙同步坐標(biāo)解耦的三相鎖相環(huán),并從新的角度對其解耦策略進(jìn)行了推導(dǎo)。再次,建立了三相三線并聯(lián)型APF的數(shù)學(xué)模型,據(jù)此給出其控制策略。對常用的滯環(huán)控制、三角載波控制、SVPWM三種電流跟蹤控制策略進(jìn)行了對比仿真分析,并對SVPWM的數(shù)字化編程實(shí)現(xiàn)進(jìn)行了詳細(xì)推導(dǎo)。對APF主電路參數(shù)對補(bǔ)償效果的影響進(jìn)行了分析,并給出了一種主電路設(shè)計的方法和控制電路的軟硬件設(shè)計方案。最后,根據(jù)主電路設(shè)計方法和控制電路的軟硬件設(shè)計方案,搭建了實(shí)驗(yàn)樣機(jī)進(jìn)行實(shí)驗(yàn),在TMS320F2812數(shù)字信號處理器中通過C語言編程實(shí)現(xiàn)了諧波檢測算法及SVPWM算法。
[Abstract]:In the face of a large number of nonlinear loads and power electronic converter equipment and other harmonic sources to bring more and more widespread harmonic pollution to the power grid. Active Power Filter APF). Harmonic suppression will be an important development direction of harmonic control in the future. Active power filter has good dynamic performance. Can flexibly adjust according to the harmonic source state and other advantages, in the power quality regulation has a very broad application prospects. With the further study of the theory. The capacity and switching frequency of power electronic devices are further improved and the computing power of digital signal processor is further enhanced. The capacity and real-time compensation of active power filter will be further improved. This paper mainly discusses the harmonic detection algorithm and control strategy of three-phase three-wire shunt active power filter from the following aspects. Beg. Analysis and research: first of all, the harmonic problem and its suppression measures are briefly introduced. The significance of active power filter to harmonic suppression and power quality improvement is pointed out. The basic principle, common structure and harmonic detection method of active power filter are introduced. Current tracking control strategy and its applications. The analysis of three-phase three-wire shunt active power filter has more general applicability and good application prospects. Secondly. Two harmonic detection algorithms, namely, PQ method and ip-iq, derived from instantaneous reactive power theory, are studied in depth. The harmonic detection results of the two methods are compared. It is found that when the voltage is distorted, the error and deficiency of the PQ method and the advantages of the ip-iq method at this time are also found. It is pointed out that PLL is the key to avoid harmonic detection error caused by voltage distortion. Several commonly used phase-locked loops are briefly introduced. The typical three-phase phase-locked loops based on single synchronous coordinates are deeply studied, and their errors and shortcomings in unbalanced three-phase voltage distortion are pointed out. For this reason, a three-phase phase-locked loop based on double synchronous coordinate decoupling is introduced, and its decoupling strategy is deduced from a new angle. Thirdly, the mathematical model of three-phase three-wire parallel APF is established. According to this, the control strategy is given, and three common current tracking control strategies, hysteresis control and triangular carrier control, SVPWM, are compared and analyzed. The realization of digital programming of SVPWM is deduced in detail, and the effect of main circuit parameters of APF on compensation effect is analyzed. At last, according to the main circuit design method and the control circuit hardware and software design scheme, the experiment prototype is built. Harmonic detection algorithm and SVPWM algorithm are realized by C language programming in TMS320F2812 digital signal processor.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TM761;TN713.8

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