LAPSE:2023.27209
Published Article
LAPSE:2023.27209
Active Shielding Design and Optimization of a Wireless Power Transfer (WPT) System for Automotive
April 4, 2023
Abstract
This study deals with the optimization of a shielding structure composed by multiple active coils for mitigating the magnetic field in an automotive wireless power transfer (WPT) system at 85 kHz. Each active coil is independently powered and the most suitable excitation is obtained by an optimization procedure based on the Gradient Descent algorithm. The proposed procedure is described and applied to shield the magnetic field beside an electric vehicle (EV) equipped with SAE standard coils, during wireless charging. The obtained results show that the magnetic field in the most critical area is significantly reduced (i.e., approximately halved) with a very limited influence on the electrical performances (i.e., WPT efficiency decreases by less than 1 percentage point compared to the case without active shielding).
This study deals with the optimization of a shielding structure composed by multiple active coils for mitigating the magnetic field in an automotive wireless power transfer (WPT) system at 85 kHz. Each active coil is independently powered and the most suitable excitation is obtained by an optimization procedure based on the Gradient Descent algorithm. The proposed procedure is described and applied to shield the magnetic field beside an electric vehicle (EV) equipped with SAE standard coils, during wireless charging. The obtained results show that the magnetic field in the most critical area is significantly reduced (i.e., approximately halved) with a very limited influence on the electrical performances (i.e., WPT efficiency decreases by less than 1 percentage point compared to the case without active shielding).
Record ID
Keywords
active coil, automotive, electric vehicle (EV), electromagnetic compatibility, magnetic field, near field, shielding, wireless power transfer (WPT)
Subject
Suggested Citation
Cruciani S, Campi T, Maradei F, Feliziani M. Active Shielding Design and Optimization of a Wireless Power Transfer (WPT) System for Automotive. (2023). LAPSE:2023.27209
Author Affiliations
Cruciani S: Department of Electrical Engineering and Automation, Sapienza University of Rome, 00185 Rome, Italy [ORCID]
Campi T: Department of Industrial and Information Engineering and Economics, University of L’Aquila, 67100 L’Aquila, Italy
Maradei F: Department of Electrical Engineering and Automation, Sapienza University of Rome, 00185 Rome, Italy
Feliziani M: Department of Industrial and Information Engineering and Economics, University of L’Aquila, 67100 L’Aquila, Italy
Campi T: Department of Industrial and Information Engineering and Economics, University of L’Aquila, 67100 L’Aquila, Italy
Maradei F: Department of Electrical Engineering and Automation, Sapienza University of Rome, 00185 Rome, Italy
Feliziani M: Department of Industrial and Information Engineering and Economics, University of L’Aquila, 67100 L’Aquila, Italy
Journal Name
Energies
Volume
13
Issue
21
Article Number
E5575
Year
2020
Publication Date
2020-10-25
ISSN
1996-1073
Version Comments
Original Submission
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PII: en13215575, Publication Type: Journal Article
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LAPSE:2023.27209
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https://doi.org/10.3390/en13215575
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Apr 4, 2023
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