Stator harmonic current compensation of a DFIG connected to a grid with voltage distortion

2017 Brazilian Power Electronics Conference (COBEP) Pub Date : 2017-11-01 DOI:10.1109/COBEP.2017.8257225

G. Gontijo, T. Tricarico, Daniel Krejci, Sersan Guedes, B. França, M. Aredes

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引用次数: 1

Abstract

The number of worldwide installed wind power plants has been growing rapidly. With the development of power electronics technology, the new wind power systems are able to optimize the extraction of the wind energy. Among the systems configurations, the doubly-fed induction generator (DFIG) is the most used, since it can make the system operate with variable speed, while using a low-cost power converter. However, there are some drawbacks in this configuration. One of the most important is the fact that the machine stator is directly connected to the grid and then, it is influenced by grid parameters variations. In some cases, a control method that aims at blocking the harmonic currents that flow to the machine stator might be essential to its proper functioning. This paper analyzes a stator harmonic current compensation, based on resonant controllers technology. The analysis is carried out in a hardware-in-the-loop configuration using a Texas Instruments microcontroller, and the system plant is simulated with the software PSCAD/EMTDC.

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电压畸变并网DFIG定子谐波电流补偿

全球安装的风力发电厂数量一直在迅速增长。随着电力电子技术的发展，新型风力发电系统能够优化风能的提取。在系统配置中，双馈感应发电机(DFIG)是使用最多的，因为它可以使系统以变速运行，同时使用低成本的功率变换器。但是，这种配置存在一些缺点。其中最重要的是电机定子直接与电网相连，并且受电网参数变化的影响。在某些情况下，一种旨在阻断流向机器定子的谐波电流的控制方法可能对其正常工作至关重要。本文分析了一种基于谐振控制器技术的定子谐波电流补偿。分析使用德州仪器的微控制器在硬件在环配置下进行，并使用软件PSCAD/EMTDC对系统工厂进行模拟。

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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2017 Brazilian Power Electronics Conference (COBEP)

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