Print Email Facebook Twitter Comparative Study of Foreign Object and Misalignment in Inductive Power Transfer Systems Title Comparative Study of Foreign Object and Misalignment in Inductive Power Transfer Systems Author Shi, W. (TU Delft DC systems, Energy conversion & Storage) Dong, J. (TU Delft DC systems, Energy conversion & Storage) Bandyopadhyay, S. (TU Delft DC systems, Energy conversion & Storage) Grazian, F. (TU Delft DC systems, Energy conversion & Storage) Soeiro, Thiago B. (TU Delft DC systems, Energy conversion & Storage) Bauer, P. (TU Delft DC systems, Energy conversion & Storage) Date 2019 Abstract This paper aims to identify the difference between foreign object (FO) and misalignment in terms of their influence on inductive power transfer (IPT) systems. This is performed through magnetic and equivalent circuit analysis of the mutual inductance, primary input impedance, charging pad terminal impedance and current harmonics. Experiment measurements on an IPT prototype are carried out to verify the analysis. It is found that: the charging pad terminal impedance under FO condition has a more pronounced decrement than that of misalignment; the mutual inductance under FO condition shows negative correlation with frequency, while positive for misalignment; the absolute value of the input impedance is decreased by FO and increased by misalignment; the influence of FO and misalignment on the THD of the input current is minimal. Finally, it is possible to detect FO and distinguish it from misalignment, through the variation of the primary pad terminal inductance, as well as the frequency dependence of the primary input impedance and the mutual inductance. Subject current harmonicsforeign objectsinductive power transfermisalignmentwireless power transfer To reference this document use: http://resolver.tudelft.nl/uuid:bdde9a37-f249-4ec6-8d61-b7f17f41b3cc DOI https://doi.org/10.1109/IECON.2019.8926782 Publisher IEEE Embargo date 2020-06-09 ISBN 978-1-7281-4879-3 Source IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society Event IECON 2019, 2019-10-14 → 2019-10-17, Lisbon, Portugal Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type conference paper Rights © 2019 W. Shi, J. Dong, S. Bandyopadhyay, F. Grazian, Thiago B. Soeiro, P. Bauer Files PDF Comparative_Study_of_Fore ... ystems.pdf 954.82 KB Close viewer /islandora/object/uuid:bdde9a37-f249-4ec6-8d61-b7f17f41b3cc/datastream/OBJ/view