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一种消除双馈电机转矩脉动的磁场重构方法

, PP. 161-166

Keywords: 双馈电机,磁场重构方法,电压不平衡和电压谐波,转矩脉动,磁通密度

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Abstract:

电网电压不平衡和电网电压谐波会恶化风力发电中双馈电机(DoublyFedInductionGenerator,DFIG)的性能,并且在电机中引入转矩脉动。本文从电磁场的角度,提出了一种双馈电机内部磁场重构方法(FieldReconstructionMethod,FRM),通过对转子电流的优化选择来减轻转矩脉动。文章首先阐述了转矩脉动的危害及传统解决办法,分析了电压不平衡和电压谐波对DFIG性能造成影响的机理,最后提出了实现转子电流优化的流程。

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