Small-Signal Average Modeling, Simulation and Carrier-Based Linear Control of a Three-Phase Four-Leg Shunt Active Power Filter

2007 IEEE International Electric Machines & Drives Conference Pub Date : 2007-05-03 DOI:10.1109/IEMDC.2007.382735

H. Kanaan, A. Hayek, K. Al-haddad

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引用次数: 20

Abstract

Current harmonics caused by nonlinear loads yield major power quality related problems in the utility. Such harmonics are commonly reduced by employing static compensators known as active power filters (APF). APF topologies are of various types, depending on technical and economical requirements; and their performance is intimately related to the applied control algorithm. In this paper, a new constant-frequency linear control scheme is proposed for a shunt three-phase four-leg APF. The APF is used to compensate the current distortion and the reactive power created by a typical industrial load. The elaboration of the control law is based on a small-signal averaged model of the converter, computed in the (d,q,0) synchronous frame. The control scheme consists of multiple-loops PI controllers that ensure voltage regulation at the DC side of the filter, and current wave shaping at the AC side. The control system is implemented numerically using the Matlab/Simulink tool. The performance of the proposed control approach is finally discussed through the obtained simulation results.

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三相四支路并联有源电力滤波器的小信号平均建模、仿真及载波线性控制

由非线性负载引起的电流谐波是电力系统中主要的电能质量问题。这种谐波通常通过采用称为有源电力滤波器(APF)的静态补偿器来减少。根据技术和经济要求，APF拓扑结构有多种类型;它们的性能与所采用的控制算法密切相关。本文提出了一种新的并联三相四支路有源滤波器恒频线性控制方案。有源滤波器用于补偿由典型工业负载产生的电流畸变和无功功率。控制律的阐述是基于转换器的小信号平均模型，在(d,q,0)同步帧中计算。该控制方案由多环PI控制器组成，确保滤波器直流侧的电压调节和交流侧的电流整形。利用Matlab/Simulink工具对控制系统进行了数值实现。最后通过仿真结果对所提出的控制方法的性能进行了讨论。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2007 IEEE International Electric Machines & Drives Conference

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