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Open AccessFeature PaperArticle

Frequency Tuning in Inductive Power Transfer Systems

Department of Industrial Engineering, University of Padova, 35131 Padova, Italy
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Electronics 2020, 9(3), 527; https://doi.org/10.3390/electronics9030527
Received: 21 February 2020 / Revised: 17 March 2020 / Accepted: 21 March 2020 / Published: 23 March 2020
Inductive power transfer systems (IPTSs) systems are equipped with compensation networks that resonate at the supply frequency with the inductance of the transmitting and receiving coils to both maximize the power transfer efficiency and reduce the IPTS power sizing. If the network and coil parameters differ from the designed values, the resonance frequencies deviate from the supply frequency, thus reducing the IPTS efficiency. To cope with this issue, two methods of tuning the IPTS supply frequency are presented and discussed. One method is aimed at making resonant the impedance seen by the IPTS power supply, the other one at making resonant the impedance of the receiving stage. The paper closes by implementing the first method in an experimental setup and by testing its tuning capabilities on a prototypal IPTS used for charging the battery of an electric vehicle. View Full-Text
Keywords: inductive power transfer systems; compensation networks; supply frequency tuning inductive power transfer systems; compensation networks; supply frequency tuning
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Bertoluzzo, M.; Buja, G. Frequency Tuning in Inductive Power Transfer Systems. Electronics 2020, 9, 527.

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