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电力电子应用中罗氏线圈的近场磁干扰:机理与抑制

Near-Magnetic Interference in Rogowski Coil for Power Electronic Applications: Mechanism and Mitigation

语言:

中文摘要

罗氏线圈(RC)因其高带宽和电气隔离特性,广泛应用于电力电子设备。然而,由邻近电流源引起的近场磁干扰(NMI)常被低估,严重影响了RC在电流表征、保护及控制中的鲁棒性。本文揭示了NMI的产生机理,并提出了相应的抑制策略,以提升其在复杂电力电子环境下的测量精度。

English Abstract

Rogowski coil (RC), valued for its high bandwidth, galvanic isolation, and ease of integration, is widely employed in high-speed integrated power electronics. However, near-magnetic interference (NMI) arising from inductive coupling with adjacent current sources is often underestimated, which undermines the RC’s robustness in crucial applications such as characterization, protection, and control. ...
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SunView 深度解读

该研究对阳光电源的高功率密度产品(如PowerTitan储能系统、大功率组串式逆变器)具有重要参考价值。在紧凑型电力电子设计中,高频电流采样极易受邻近功率回路干扰,导致采样精度下降,进而影响PCS的控制环路稳定性及保护逻辑。建议研发团队在iSolarCloud智能运维平台的底层传感器选型及PCB布局设计中,参考该文提出的NMI抑制方法,优化电流采样电路的抗干扰能力,提升系统在复杂电磁环境下的运行可靠性与故障诊断准确性。