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Optimization of a Magnetodynamic Receiver for Versatile Low-Frequency Wireless Power Transfer

descriptionPublicationkeyboard_double_arrow_right Conference object , Other literature type 01 Dec 2019 France Publisher:IEEEJournal:2019 19th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS)Funded by:EC | WiPASS

Authors: Garraud, N.; Alessandri, B.; Gasnier, P.; Arnold, D.; Boisseau, S.;

doi: 10.1109/powermems49317.2019.71805306097

Optimization of a Magnetodynamic Receiver for Versatile Low-Frequency Wireless Power Transfer

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Abstract

Magnetodynamic wireless power transfer (WPT), also known as electrodynamic wireless power transfer, is a low-frequency WPT technology based on an electromechanical receiver comprising a permanent magnet moving in a coil. Because of the low-frequency field, this technology is safe around humans and enables transfer through conductive media. In this paper, we focus on the design and the optimization of the power receiver with advanced modelling methods. Two operating modes, namely a continuously rotating mode and a resonant mode, targeting high-power-density and mid-range power transfer respectively, are investigated and compared to previous versions. The fabricated 25-cm3 receiver presents substantial improvements in terms of transferred power (3.3W) and power density (x7) compared to previous receivers in the same conditions of fields.

Country

France

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Keywords

energy harvesting, [SPI] Engineering Sciences [physics], [SPI.NANO] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, wireless power transfer

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