Analysis and Modeling of Radiated EMI Considering Coupling between Power Converter and Power Cable with LC-Type EMI Filter

作者：Qinghui Huang, Yingjie Zhang, Shuo Wang, Yirui Yang, Zhedong Ma, Yanwen Lai · 年份：2025 · DOI：10.1109/apec48143.2025.10977204 · 被引用次数：3 · 研究领域：Electromagnetic Compatibility and Noise Suppression、Advanced Antenna and Metasurface Technologies

This paper explores the use of an LC-type filter (CM choke and Y-capacitor) in a dual active bridge (DAB) converter to reduce radiated EMI from the antenna. However, a notable radiated EMI issue is identified between 100MHz and 400MHz, resulting from an overlooked antenna formed by the input/output cable and power converter. A new radiation model is proposed considering coupling between the power converter and input/output cables, with experimental verification. Additionally, an improved L and C arrangement is suggested for better EMI performance.