Evaluation and Suppression of Radiation Interference for the Coupler of Inductive Wireless Power Transfer System

Speaker:  Heyuan Li

Time:      17:00, Apr. 15

Location: SIST 1A-200

Host:      Minfan Fu 

Abstract:

As a strategic emerging technology, Inductive Power Transfer (IPT) drives a shift in power supply models and has established standardized systems across multiple fields. However, IPT systems, based on resonant power converters with variable coupling topologies, face unique electromagnetic compatibility challenges. The open magnetic circuit of the IPT coupler acts as an antenna, producing higher radiation levels compared to traditional isolation components at the same power level, with wideband EMI characteristics. Additionally, dynamic receiver offsets further complicate the prediction and control of radiated EMI. The lack of a comprehensive theoretical framework for radiated EMI limits the widespread deployment of IPT technology. To address these challenges, the EMI generation mechanisms and propagation paths are analyzed, and multi-dimensional suppression methods, such as converter parameter optimization and modulation strategy innovation, are proposed to enhance the electromagnetic safety and standardized application of IPT technology.

Bio:

Heyuan Li received the B.S. degree in electrical engineering from the University of Shanghai for Science and Technology, Shanghai, China, in 2020. He is currently pursuing the Ph.D. degree in power electronics with the School of Information Science and Technology, ShanghaiTech University, Shanghai. His current interests include radiation model and EMI of high-frequency power converters.