基于PSIM仿真的有源濾波器的研究

電氣工程論文編號:DQ084   論文字數(shù):15776,頁數(shù):31

目 錄
摘要……………………………………………………………………………. . .……………Ⅱ
Abstract……………………………………………………………….....................Ⅲ
1  緒論…………………………………………………………………………………………1
 1.1 問題的提出……………………………………………………………………………...1
 1.2 諧波研究的意義………………………………………………………………………...1
 1.3 諧波抑制………………………………………………………………………………...2
 1.4 國內(nèi)外有關(guān)有源濾波及混合濾波的研究現(xiàn)狀………………………………………...2
 1.5 本文主要研究的內(nèi)容 3
2  濾波器的特性研究………………………………………………………………………4
 2.1 無源LC濾波器….………………………………………………………………….…..4
 2.2 有源濾波器………………………………………………………………….... . ............6
 2.2.1  APF的類型、構(gòu)成和工作原理………………………………………………6
 2.2.2  電力有源濾波器的分類………………………………………………………7
 2.2.3  APF的前景……………………………………………………………………8
 2.2.4  PPF與APF的比較……………………………………………………………9
3  瞬時諧波電流檢測技術(shù)的研究………………………………………………..11
 3.1 諧波電流檢測的研究現(xiàn)狀……………………………………………………………..11
 3.2 基于瞬時無功功率理論諧波電流檢測方法研究……………………………………..12
     3.2.1  傳統(tǒng)的功率理論回顧………………………………………………………...12
 3.2.2  瞬時無功功率理論概述………………………………………………….......13
 3.2.3  瞬時功率理論的pq諧波電流檢測法.………………………………………14
 3.2.4  諧波電流檢測方法研究 15
4  PWM控制方法的研究 16
 4.1 PWM控制的基本原理 16
 4.2 滯環(huán)比較方法 16
 4.3 三角波比較方式 17
 4.4 空間矢量控制方法……………………………………………………………………..18
 4.5 無差拍控制方法…………………………………………………………………….19
5  并聯(lián)型濾波系統(tǒng)的設(shè)計和仿真……………………………………………………..20
 5.1 PSIM仿真軟件………………………………………………………………………20
 5.2 主電路設(shè)計………………………………………………………………………….20
 5.3 仿真結(jié)果及分析…………………………………………………………………….22
6  總結(jié)………………………………………………………………………………………24
致謝…………………………………………………………………………………………...25
參考文獻………………………………………………………………………………………26

 摘要
 隨著電力電子裝置的廣泛應(yīng)用及大量非線性負荷的投入運行，電力系統(tǒng)的諧波污染也日趨嚴重。傳統(tǒng)用LC濾波裝置雖然簡單，但有一定的局限性。電力電子技術(shù)的發(fā)展，為電力系統(tǒng)諧波的治理提供了新的方法，采用有源濾波（Active Power Filter-APF）技術(shù)既可對電網(wǎng)的諧波進行抑制，改善電力線路的電流波形，還能補償電網(wǎng)的無功功率，提高電網(wǎng)的功率因數(shù)。有源電力濾波器(APF)由于能動態(tài)補償電網(wǎng)中各次諧波，且響應(yīng)速度快而正成為治理諧波污染的最有效設(shè)備之一。電力有源濾波器作為目前諧波抑制非常行之有效的措施，對它的研究很有價值。
 本文從傳統(tǒng)的PPF（無源濾波器）和目前對諧波抑制非常有效的APF（有源濾波器）的比較入手，對兩種濾波器進行全面的比較，從結(jié)構(gòu)上和電路原理上分析了電力有源濾波器抑制諧波的原理，本文主要分析目前較為典型的并聯(lián)型APF及其拓撲結(jié)構(gòu)的特點。
 本文以并聯(lián)型APF為對象，選用基于瞬時無功功率理論的諧波電流的檢測方法，克服了傳統(tǒng)諧波電流檢測方法實時性能差的缺點,并且容易實現(xiàn)，并且運用PWM的控制方法，運用PSIM仿真軟件建立模型，進行仿真成功。

關(guān)鍵詞：電力有源濾波器；諧波；瞬時無功功率理論；PSIM仿真；

Abstract
Power electronic devices with a wide range of applications and a large number of non-linear load operation, the harmonic pollution in power systems are becoming increasingly serious. The traditional simple LC filter, but have some limitations. The development of power electronics technology for the management of power system harmonics provides a new method, the use of Active Filter (Active Power Filter-APF) technology can be carried out on the grid harmonic suppression, power lines to improve the current waveform, but also compensation for reactive power grid and improve grid power factor. Active power filter (APF) as a result of dynamic compensation to the various harmonic grid, and the fast response and harmonic pollution is becoming the treatment of one of the most effective equipment. Active power filter harmonic current suppression, as a very effective measures, the study of it very valuable.
This article from the traditional PPF (filter out), and currently very effective harmonic suppression APF (APF) to start the comparison of two types of filters to conduct a comprehensive comparison of the structure and analysis of the circuit power active principle of harmonic suppression filter, this paper, a more typical analysis of the current shunt APF topology and its characteristics.
In this paper, shunt APF for the object, chosen based on instantaneous reactive power theory of the harmonic current detection methods, overcome the traditional harmonic current detection method of the shortcomings of poor real-time performance, and easy to implement. And the use of PWM control method, the use of PSIM simulation software simulation to establish a successful model.
Keywords：Active power filter; harmonics; instantaneous reactive power theory; PSIM simulation