This article proposes two magnetic integrated filters, called Γ-source and Flipped-Γ-source with the advantage of better magnetic circuit utilization. Therefore, the number of required magnetic cores and the total size of inductive elements are reduced compared to the other high-order filters, such as the LCL and the LLCL. Also, the total windings copper weight as well as the windings currents and losses are lower. It will be shown that the required air gap for the magnetic core is very short, so the adverse effects of the electro-magnetic interference and the fringing flux are also prevented. Thus, the proposed filters require a small and simple magnetic element, which also works at a lower temperature. Moreover, the proposed filters offer a robust stability and a high filtering performance against a wide range of parameter mismatches. Based on the theoretical analysis and the comparative experimental tests on a grid tied converter, the advantages of the proposed filters are confirmed.

中文翻译：

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用于单相并网电压源转换器的${\mathsf \Gamma}$源磁性集成滤波器


本文提出了两种磁性集成滤波器，称为 Γ-source 和 Flipped-Γ-source，具有更好的磁路利用率的优点。因此，与其他高阶滤波器（例如LCL和LLCL）相比，所需磁芯的数量和电感元件的总尺寸减少。此外，绕组铜总重量以及绕组电流和损耗也较低。可以看出，磁芯所需的气隙非常短，因此也可以防止电磁干扰和边缘磁通的不利影响。因此，所提出的滤波器需要一个小而简单的磁性元件，该元件也可以在较低的温度下工作。此外，所提出的滤波器针对各种参数失配提供了鲁棒的稳定性和高滤波性能。基于理论分析和并网变流器的对比实验测试，证实了所提出的滤波器的优点。