IEICE TRANSACTIONS on Electronics
Capacitive Wireless Power Transfer System with Misalignment Tolerance in Flowing Freshwater Environments
Summary :
The misalignment of a coupler is a significant issue for capacitive wireless power transfer (WPT). This paper presents a capacitive WPT system specifically designed for underwater drones operating in flowing freshwater environments. The primary design features include a capacitive coupler with an opposite relative position between feeding and receiving points on the coupler electrode, two phase compensation circuits, and a load-independent inverter. A stable and energy-efficient power transmission is achieved by maintaining a 90° phase difference on the coupler electrode in dielectrics with a large unloaded quality factor (Q factor), such as in freshwater. Although a 622-mm coupler electrode is required at 13.56MHz, the phase compensation circuits can reduce to 250mm as one example, which is mountable to small underwater drones. Furthermore, the electricity waste is automatically reduced using the constant-current (CC) output inverter in the event of misalignment where efficiency drops occur. Finally, their functions are simulated and demonstrated at various receiver positions and transfer distances in tap water.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E107-C No.2 pp.47-56
- Publication Date
- 2024/02/01
- Publicized
- 2023/08/01
- Online ISSN
- 1745-1353
- DOI
- 10.1587/transele.2023ECP5018
- Type of Manuscript
- PAPER
- Category
- Electromagnetic Theory
Authors
Yasumasa NAKA
Toyohashi University of Technology
Akihiko ISHIWATA
Toyohashi University of Technology
Masaya TAMURA
Toyohashi University of Technology
Keyword
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Yasumasa NAKA, Akihiko ISHIWATA, Masaya TAMURA, "Capacitive Wireless Power Transfer System with Misalignment Tolerance in Flowing Freshwater Environments" in IEICE TRANSACTIONS on Electronics,
vol. E107-C, no. 2, pp. 47-56, February 2024, doi: 10.1587/transele.2023ECP5018.
Abstract: The misalignment of a coupler is a significant issue for capacitive wireless power transfer (WPT). This paper presents a capacitive WPT system specifically designed for underwater drones operating in flowing freshwater environments. The primary design features include a capacitive coupler with an opposite relative position between feeding and receiving points on the coupler electrode, two phase compensation circuits, and a load-independent inverter. A stable and energy-efficient power transmission is achieved by maintaining a 90° phase difference on the coupler electrode in dielectrics with a large unloaded quality factor (Q factor), such as in freshwater. Although a 622-mm coupler electrode is required at 13.56MHz, the phase compensation circuits can reduce to 250mm as one example, which is mountable to small underwater drones. Furthermore, the electricity waste is automatically reduced using the constant-current (CC) output inverter in the event of misalignment where efficiency drops occur. Finally, their functions are simulated and demonstrated at various receiver positions and transfer distances in tap water.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.2023ECP5018/_p
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@ARTICLE{e107-c_2_47,
author={Yasumasa NAKA, Akihiko ISHIWATA, Masaya TAMURA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Capacitive Wireless Power Transfer System with Misalignment Tolerance in Flowing Freshwater Environments},
year={2024},
volume={E107-C},
number={2},
pages={47-56},
abstract={The misalignment of a coupler is a significant issue for capacitive wireless power transfer (WPT). This paper presents a capacitive WPT system specifically designed for underwater drones operating in flowing freshwater environments. The primary design features include a capacitive coupler with an opposite relative position between feeding and receiving points on the coupler electrode, two phase compensation circuits, and a load-independent inverter. A stable and energy-efficient power transmission is achieved by maintaining a 90° phase difference on the coupler electrode in dielectrics with a large unloaded quality factor (Q factor), such as in freshwater. Although a 622-mm coupler electrode is required at 13.56MHz, the phase compensation circuits can reduce to 250mm as one example, which is mountable to small underwater drones. Furthermore, the electricity waste is automatically reduced using the constant-current (CC) output inverter in the event of misalignment where efficiency drops occur. Finally, their functions are simulated and demonstrated at various receiver positions and transfer distances in tap water.},
keywords={},
doi={10.1587/transele.2023ECP5018},
ISSN={1745-1353},
month={February},}
Copy
TY - JOUR
TI - Capacitive Wireless Power Transfer System with Misalignment Tolerance in Flowing Freshwater Environments
T2 - IEICE TRANSACTIONS on Electronics
SP - 47
EP - 56
AU - Yasumasa NAKA
AU - Akihiko ISHIWATA
AU - Masaya TAMURA
PY - 2024
DO - 10.1587/transele.2023ECP5018
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E107-C
IS - 2
JA - IEICE TRANSACTIONS on Electronics
Y1 - February 2024
AB - The misalignment of a coupler is a significant issue for capacitive wireless power transfer (WPT). This paper presents a capacitive WPT system specifically designed for underwater drones operating in flowing freshwater environments. The primary design features include a capacitive coupler with an opposite relative position between feeding and receiving points on the coupler electrode, two phase compensation circuits, and a load-independent inverter. A stable and energy-efficient power transmission is achieved by maintaining a 90° phase difference on the coupler electrode in dielectrics with a large unloaded quality factor (Q factor), such as in freshwater. Although a 622-mm coupler electrode is required at 13.56MHz, the phase compensation circuits can reduce to 250mm as one example, which is mountable to small underwater drones. Furthermore, the electricity waste is automatically reduced using the constant-current (CC) output inverter in the event of misalignment where efficiency drops occur. Finally, their functions are simulated and demonstrated at various receiver positions and transfer distances in tap water.
ER -
English
