Study of High Frequency Characteristics Modeling and EMI Suppression of Common Mode Chokes

The Applied Computational Electromagnetics Society Journal (ACES) Pub Date : 2023-07-06 DOI:10.13052/2023.aces.j.380203

Yakang Pei, Wei Yan, Hao Ma, Mengxia Zhou, Jian Yang

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引用次数: 1

Abstract

This paper proposes a method for building a high-frequency model of common-mode chokes in the frequency range of 9kHz to 200MHz. The method only needs to measure the common mode and differential mode impedance data of the common mode choke, and then use the differential evolution algorithm to process the impedance data to complete its high-frequency modeling. Comparison with the high-frequency model obtained by using a genetic algorithm shows that the method has high accuracy. After the high frequency modeling of the common mode chokes, the high frequency modeling of the X and Y capacitors is performed using the differential evolution algorithm, and the high frequency model of the EMI filter is obtained by combining it with the established high frequency model of common mode chokes. By comparing the measured and simulated conducted interference noise suppression effect of the EMI filter, the high frequency model of the common mode chokes is verified to suppress the conducted interference, and the effectiveness of the common mode choke high frequency modeling method is determined.

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共模扼流圈高频特性建模与电磁干扰抑制研究

本文提出了在9kHz ~ 200MHz频率范围内建立共模扼流圈高频模型的方法。该方法只需要测量共模扼流圈的共模和差模阻抗数据，然后利用差分进化算法对阻抗数据进行处理，完成其高频建模。与遗传算法得到的高频模型进行比较，表明该方法具有较高的精度。在对共模扼流圈进行高频建模后，利用差分进化算法对X和Y电容进行高频建模，并将其与已建立的共模扼流圈高频模型相结合，得到电磁干扰滤波器的高频模型。通过对比电磁干扰滤波器的实测和仿真传导干扰噪声抑制效果，验证了共模扼流圈高频模型抑制传导干扰的有效性，确定了共模扼流圈高频建模方法的有效性。

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The Applied Computational Electromagnetics Society Journal (ACES)

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