This paper proposes two novel airgap profile designs and distributed airgap arrangement scheme for reduction of winding and thermal losses in high frequency current transformer (HFCT) sensors. The novel airgap profiles namely, zigzag and stepped airgap profiles are proposed to reduce fringing flux around the winding conductors. Moreover, to decrease winding and thermal losses, distributed airgap arrangement scheme is proposed. In distributed airgap arrangement, a single airgap is distributed to multiple equidistant smaller airgaps around the magnetic core. The analysis is performed using 3D finite element analysis (FEA) method. The 3D-finite element analysis results confirm that the HFCT sensors with the proposed airgap profiles and arrangement scheme can reduce winding and thermal losses ensuring high performance for HFCT sensors.

中文翻译：

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用于减少高频电流互感器传感器绕组和热损耗的新型磁芯气隙剖面设计方案

本文提出了两种新颖的气隙轮廓设计和分布式气隙布置方案，以减少高频电流互感器 (HFCT) 传感器中的绕组和热损耗。提出了新颖的气隙轮廓，即锯齿形和阶梯形气隙轮廓，以减少绕组导体周围的边缘通量。此外，为了减少绕组和热损耗，提出了分布式气隙布置方案。在分布式气隙布置中，单个气隙分布到磁芯周围多个等距的较小气隙。使用 3D 有限元分析 (FEA) 方法进行分析。3D 有限元分析结果证实，具有建议的气隙轮廓和布置方案的 HFCT 传感器可以减少绕组和热损耗，确保 HFCT 传感器的高性能。