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High-power-transfer-density capacitive wireless power transfer system for electric vehicle charging
2017 IEEE Energy Conversion Congress and Exposition (ECCE), 2017This paper introduces a large air-gap capacitive wireless power transfer (WPT) system for electric vehicle charging that achieves a power transfer density exceeding the state-of-the-art by more than a factor of four. This high power transfer density is achieved by operating at a high switching frequency (6.78 MHz), combined with an innovative approach ...
Sreyam Sinha +5 more
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A very-high-power-transfer-density GaN-based capacitive wireless power transfer system
2017 IEEE 5th Workshop on Wide Bandgap Power Devices and Applications (WiPDA), 2017This paper introduces a very-high-power-transfer-density GaN-based capacitive wireless power transfer (WPT) system, suitable as one module of a multi-modular WPT system for charging of electric forklifts. This capacitive WPT system achieves very high power transfer density by operating at a high switching frequency (6.78 MHz) using a GaN-based inverter,
Sreyam Sinha +3 more
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Improvements of Transfer Efficiency in Capacitive Wireless Power Transfer Under Seawater
2019 IEEE Asia-Pacific Microwave Conference (APMC), 2019In this paper, the efficiency improvement in an electric coupler using an electric double layer was presented. High efficiency of a capacitive coupler can be achieved under seawater because the Q-factor improves when using an electric double layer. First, to reveal area characteristics of dielectric constant and Q-factor by measuring of seawater for an
Kousuke Murai, Masaya Tamura
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30 W capacitive wireless power transfer system with 5.8 pF coupling capacitance
2015 IEEE Wireless Power Transfer Conference (WPTC), 2015This paper presents a new capacitive wireless power transfer (WPT) system that achieves effective power transfer even with very low values of coupling capacitance between two metal plates separated by an air-gap. A prototype of the proposed capacitive WPT system has been built and shown to transfer 30 W across two 5-cm by 5-cm metal plates separated by
null Chieh-Kai Chang +4 more
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Effects of Conductive Tissue on Capacitive Wireless Power Transfer
2018 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (Wow), 2018Biomedical devices are one of the most successful applications of Inductive Power Transfer (IPT) where it provides a lifetime of power without the risk of infection associated with percutaneous leads. However, the preference in the industry for metallic packages to meet the biocompatibility and hermeticity requirements is a barrier to applying IPT ...
Reza Sedehi +3 more
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User-Defined Power Distribution for Capacitive Wireless Power Transfer With Multiple Receivers
2024 IEEE Wireless Power Technology Conference and Expo (WPTCE)Abstract: Capacitive power transfer allows for wireless charging of multiple devices at once. In a typical system, the amount of power delivered to the different devices is determined by their position and distance to the transmitter. However, it can be beneficial to prioritize the charging of the devices.
Minnaert, Ben +2 more
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Capacitively Coupled Wireless Power Transfer to Sailings Ships
2022 Asia-Pacific Microwave Conference (APMC), 2022Tomohiro Tsujimura +2 more
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On Fractional-order Capacitive Wireless Power Transfer System
2022 International Conference on Microelectronics (ICM), 2022Shahenda M. Abdelhafiz +3 more
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Capacitive Wireless Power Transfer Through a Saline Medium
2022 Asia-Pacific Microwave Conference (APMC), 2022Masaya Tamura +2 more
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CAPACITIVE WIRELESS POWER TRANSFER SYSTEMS FOR ELECTRIC VEHICLE CHARGING
202094 pages ; This work presents a capacitive wireless power transfer (WPT) system for electric vehicle charging that achieves high efficiency and record-breaking power transfer density. This high performance is enabled by multi-MHz operation, innovatively designed matching networks, enhancements in the design of the capacitive coupling plates, and use of
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