Inductive Power Transfer System with Maximum Efficiency Tracking Control and Real-Time Mutual Inductance Estimation

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

15 Scopus Citations
View graph of relations


Related Research Unit(s)


Original languageEnglish
Pages (from-to)6156-6167
Journal / PublicationIEEE Transactions on Power Electronics
Issue number5
Online published13 Nov 2021
Publication statusPublished - May 2022


To design simple and efficient inductive power transfer (IPT) systems, a minimum number of conversion stages and an effective maximum efficiency tracking (MET) are the primary design criteria. The MET control uses a fast mutual inductance estimation (MIE) algorithm to achieve fast tracking of the maximum efficiency point, especially when the variation of the gap distance and misalignment of the magnetic coupler are significant. The feedback control of the MET-MIE IPT system should be designed without a wireless communication channel to improve stability and robustness. In this article, a novel MET-MIE control strategy is proposed for achieving simplicity and high efficiency in IPT systems. Verifications are provided by simulations and experiments. It is shown that maximum efficiency can be tracked with less than 4% error in MIE under significant variation of the gap distance and misalignment of the magnetic coupler.

Research Area(s)

  • Inductive-power-transfer (IPT), maximum efficiency tracking (MET), misalignment, mutual inductive estimation