毕业设计并联型三相四线制有源电力滤波器滞环电路设计摘要随着电力电子装置与其它非线性负载的广泛应用，电网中的谐波和无功污染日趋严重，对电力系统和用户造成了一系列危害。并联有源电力滤波器作为一种新型的谐波、无功综合补偿系统，是电能质量控制领域中的讨论热点。近年来，三相四线制电网中的谐波和负载不平衡问题日益突出，为此本文讨论了三相四线制系统中谐波和无功功率的统一补偿问题。本文首先简单介绍了电力系统谐波的基本概念、基本原理与其对整个电力系统的影响，然后介绍国外有源电力滤波器的控制方法的进展趋势和应用情况，不同类型有源电力滤波器的基本原理、结构和控制方法，混合型并联有源电力滤波器的基本原理、结构，最后重点分析并联型三相四线制有源电力滤波器控制方法，绘制并联型三相四线制有源电力滤波器的原理图与其框图，绘制整个控制电路原理图与框图，并利用 MATLAB 仿真软件对有源电力滤波器进行仿真，得出了预期波形。关键词：谐波；电力有源滤波器；控制电路；滞环电路SHUNT THREE-PHASE FOUR-WIRE ACTIVE POWER FILTER DESIGN OF HYSTERESIS CIRCUITAbstractThe pollution of harmonics and reactive power in power grid becomesserious and endangers the power system and customers while power electronicdevices and other nonlinear loads are applied widely.The study on shunt activepower filter, which is a novel device compensating harmonics and reactive power simultaneously,is the focus in the field of power quality control.Inrecent years,the issues of harmonics and loads unbalance in three-phase four-wire power grid are more and more serious.In this paper, a brief account of the power system harmonics of the basic concepts, the basic principles and its impact on the entire power system.And then the paper gives an introduction about active power filter’s controlling method and Application, Different types of active power filter’s the basic principles, structure and control method,.Parallel hybrid active power filter’s basic principles, structure is also introducede ,at last...
