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Title: Stability improvement of dynamic EV wireless charging system with receiver-side control considering coupling disturbance
Authors: Chen, K 
Cheng, KWE 
Yang, Y 
Pan, J
Issue Date: 2-Jul-2021
Source: Electronics (Switzerland), 2 July 2021, v. 10, no. 14, 1639
Abstract: Receiver-side control has been a reliable practice for regulating the transferred energy to the batteries in the electric vehicle (EV) wireless power transfer (WPT) systems. Nonetheless, the unpredictable fluctuation of the mutual inductance in dynamic wireless charging brings extreme instability to the charging process. This overshoot that appears in instant vibrations may largely increase the voltage/current stress of the system, and even cause catastrophic failure in the battery load. In addition, the speed of the vehicles may lead to untraceable steady-state operation. However, existing solutions to the above two issues suffer from either long communication time delay or significantly compromised output regulation. In this paper, the slow dynamics and the overshoot issues of the WPT system are elaborated in theory, and the small-signal model mainly considering mutual inductance disturbance is established. A simple feedforward control is proposed for overshoot damping and fast system dynamics. Experimental results validate that the overshoot can be reduced by 13% and the settling time is improved by 50% in vehicle braking or acceleration. In constant speed driving, the battery charging ripple is decreased by 12% and ensures better system stability.
Keywords: Dynamic wireless charging
Mutual inductance
Publisher: MDPI
Journal: Electronics (Switzerland) 
EISSN: 2079-9292
DOI: 10.3390/electronics10141639
Rights: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (
The following publication Chen, K.; Cheng, K.W.E.; Yang, Y.; Pan, J. Stability Improvement of Dynamic EV Wireless Charging System with Receiver-Side Control Considering Coupling Disturbance. Electronics 2021, 10, 1639 is available at
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