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Selective Harmonic Detection and Compensation Based on Observer Theory

Abstract

近年来电网谐波污染日益严重,谐波的研究和治理受到了国内外的高度重视。为了实现谐波的选次、精确补偿,本文分别对谐波检测和有源电力滤波器(APF)的控制策略两部分内容进行了研究。首先,观测器理论运用在谐波检测领域的研究,国内外学者才刚开始涉及。本文提出了一种基于观测器理论的新型谐波电流检测方法,实现了指定次谐波的快速、精确检测,为谐波检测提供了一种新的思路;其次,工业过程中环境干扰给系统的结构参数带来很大的不确定性,按照理想模型设计的最优控制器在此情况下难以保持最优。本文设计了一种自适应的模型预测控制方法,能够计算出电路参数变化给系统模型带来的偏差,在等效的实际电路模型上实现逆变器的精确电流跟踪;...In recent years, the power network’s harmonic pollution becomes more and more serious. The study and governance of harmonic absorb high attention in the world. In order to realize selective and accurate harmonic compensation, harmonic detection and control strategy of APF are studied in this paper. Firstly, it’s just the beginning for the foreign scholars to involve the research of observer theory...学位:工学硕士院系专业:航空航天学院_电气检测技术及仪器学号:1992013115291

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