D11.12 - Analysis and Modeling of Radiated EMI Considering Coupling Between Power Converter and Power Cable with LC-Type EMI Filter

Thursday, March 20, 2025

11:30 AM – 1:30 PM ET

Location: Level One, Hall A3

Technical Dialogue Presenter(s)

Qinghui Huang

University of Florida

Presentation Paper

Co-Author(s)

Yirui Yang, PhD (he/him/his)

University of Florida
SW

Shuo Wang

University of Florida
ZM

Zhedong Ma

Apple
YZ

Yingjie Zhang, MS

University of Florida
Yanwen Lai

University of Florida

This digest 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 output cable and secondary ground plane. A new radiation model is proposed, considering the ground plane and LC filters, with experimental verification. Additionally, an improved L and C arrangement is suggested for better EMI performance.