电容电路
电磁干扰
转换器
变压器
电阻抗
电容感应
电子工程
电容
电磁干扰
电气工程
输出阻抗
电容器
计算机科学
电压
工程类
物理
电极
量子力学
作者
Qinghui Huang,Yiming Li,Zhedong Ma,Yirui Yang,Yanwen Lai,Shuo Wang
标识
DOI:10.1109/ecce53617.2023.10362101
摘要
The capacitance balance technique to reduce CM EMI noise in isolated converters will fail due to the resonance of the CM impedance of the transformer. This paper identifies the unbalanced CM impedances of the transformer will lead to spikes in the CM EMI spectrum. Two RLC branches are used to represent the CM impedances of the transformer. An RLC balance technique is proposed to achieve impedance balance at the capacitive region, the resonant point, and the inductive region. Then, the proposed method is extended to several isolated converters. Finally, the effectiveness of the proposed method and the correctness of the parameters design are verified by experiment results.
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