Advances in Leakage Current Suppression for Dynamic Wireless Power Transfer System

DOI

10.2991/978-94-6463-986-5_80How to use a DOI?

Keywords

Dynamic Wireless Power Transfer (DWPT) Systems; N-Legged Inverter; Leakage Current

Abstract

This paper presents a systematic investigation into the research progress on leakage current suppression in N-leg inverters for dynamic wireless power transfer (DWPT) systems. With the widespread adoption of electric vehicles, DWPT technology has emerged as a critical solution due to its convenient and efficient charging capabilities. As a core transmitter-side topology, the N-legged inverter significantly enhances system scalability by reducing the number of switches from 4n in conventional full-bridge inverters to 4 + 2n. However, this architecture introduces new leakage current challenges stemming from voltage disparities in standby coils, leading to copper losses and electromagnetic interference (EMI) that compromise system efficiency and safety. Addressing these challenges, this study comprehensively reviews two predominant suppression strategies: the short-pulse control method and the pulse-width phase modulation method. After analyzing the limitations of these approaches, the paper proposes enhanced control strategies extended to n-leg configurations, emphasizing the critical importance of synchronizing all standby bridge arms in multi-vehicle charging scenarios to prevent additional power consumption and resonance issues caused by asynchronous operation. Ultimately, this research provides essential technical references and practical guidance for leakage current management, topology optimization, and efficient deployment in DWPT systems.

Copyright

© 2026 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Zizhu Tang
PY  - 2026
DA  - 2026/02/18
TI  - Advances in Leakage Current Suppression for Dynamic Wireless Power Transfer System
BT  - Proceedings of the 2025 International Conference on Electronics, Electrical and Grid Technology (ICEEGT 2025)
PB  - Atlantis Press
SP  - 784
EP  - 790
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-986-5_80
DO  - 10.2991/978-94-6463-986-5_80
ID  - Tang2026
ER  -