Study on high efficiency WPT underseas

Futagami, D.; Sawahara, Yuichi; Ishizaki, Toshio; Awai, Ikuo

doi:10.1109/wpt.2015.7140149

Cited by 10 publications

(7 citation statements)

References 1 publication

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“…An adaptive system is proposed in which removes additional wireless interfaces. In another study [40], the authors h highlighted eddy current losses and addressed coil structure to overcome these losse [41], the authors studied high efficiency WPT for undersea environment. Zhengchao et al [42] carried out an analysis of eddy current losses for various frequencies and alignments.…”

Section: Related Workmentioning

confidence: 99%

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Enabling Underwater Wireless Power Transfer towards Sixth Generation (6G) Wireless Networks: Opportunities, Recent Advances, and Technical Challenges

Mohsan

Khan

Mazinani

et al. 2022

JMSE

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In recent decades, wireless power transfer (WPT) has gained significant interest from both academic and industrial experts. It possesses natural electrical isolation between transmitter and receiver components, ensuring a secure charging mechanism in an underwater scenario. This ground-breaking technology has also enabled power transmission in the deep-sea environment. However, the stochastic nature of the ocean highly influences underwater wireless power transmission and transfer efficiency is not up to that of terrestrial WPT systems. Recently, the research fraternity has focused on WPT in the air medium, while underwater wireless power transfer (UWPT) is challenging and yet to be explored. The major concerns are ocean current disturbance, bio-fouling, extreme pressure and temperature, seawater conductivity and attenuation. Thus, it is essential to address these challenges, which cause a substantial energy loss in UWPT. This study presents a comparison between various WPT techniques and highlights the research contributions in UWPT in recent years. Research and engineering challenges, practical considerations, and applications are analyzed in this review. We have also addressed influencing factors such as coil orientation, coil misalignment and seawater effects in order to realize an efficient and flexible UWPT system. In addition, this study proposes multiple-input and multiple-output (MIMO) wireless power transmission, which can significantly improve the endurance of autonomous underwater vehicles (AUVS). This idea can be applied to the design of an underwater wireless power station for self-charging of AUVs.

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Section: Related Workmentioning

confidence: 99%

“…Surprisingly, the coupling coefficient for a helix coil decreases while for spiral coil it increases by increasing the number of turns, as shown in Figure 13. Hence, the coupling coefficient is a key element for designing of any coil [41]. We have investigated the effect of coil size, shape, orientation and coupling coefficient.…”

Section: Coil Topologymentioning

confidence: 99%

Enabling Underwater Wireless Power Transfer towards Sixth Generation (6G) Wireless Networks: Opportunities, Recent Advances, and Technical Challenges

Mohsan

Khan

Mazinani

et al. 2022

JMSE

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“…Until now, investigations on wireless power transfer technology have mainly focused on the design and optimization of the magnetic coupling structure [10][11][12][13][14], compensation topology [15][16][17][18][19][20][21][22][23], and control algorithm [24,25]. In addition to academic research, wireless power transfer technology has been commercialized.…”

Section: Introductionmentioning

confidence: 99%

Design and Optimization of a Wireless Power Transfer System with a High Voltage Transfer Ratio

et al. 2022

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With the development of the logistics industry, low-voltage systems, such as intelligent logistics vehicles, have also started to propose application scenarios for wireless power transfer systems. As most logistics vehicles use lithium batteries for energy supply, the wireless charging system has to adapt to the charging characteristic curve of lithium batteries. In this paper, a dual-transmitter single-receiver compound resonant compensation topology with a high voltage ratio is proposed, and a corresponding magnetic coupler is designed and optimized through finite element analysis, which guarantees adaptive output curves according to the working state. A 1 kW experimental platform is established to verify the theoretical analysis, which realizes a high voltage transformation ratio with 90.3% efficiency. Throughout the whole charging process, the output curve agrees with the charging profile of the lithium battery, which can greatly extend the service life of lithium batteries.

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“…We showed by experimental measurements that the proposed compact and high-Q receiver can be used to enhance the power transfer efficiency of a WPT system. 5–11 In this paper, a machine learning design guide is used to implement a high-efficiency wireless power transmission via magnetic resonance.…”

Section: Introductionmentioning

confidence: 99%

High-efficiency and compact WPT receiving antenna design using simulation optimization method

Kim

Seo

2021

International Journal of Electrical Engineering & Education

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In this paper, a high-efficiency and compact wireless power transfer (WPT) receiving antenna using an flexible printed circuits board (FPCB) with high-Q factor is proposed. The proposed high-efficiency and compact WPT receiving antenna consists of a spiral structure, a lumped element and via through the ground structure. In this paper, in order to design a miniaturized high-efficiency WPT receiving antenna, machine learning technology was used to optimally design the antenna pattern that affects the Q factor. The designed receiving antenna has improved wireless power transmission efficiency with high Q characteristics. The power transfer efficiency is above 88% from distance 10 mm and the resonant frequency is 110 MHz. The sizes of the receiving antenna and the NFC antenna are 30 × 40 mm and 20 × 30 mm, respectively. Machine learning was used to design and fabricate the composite module of a WPT receiving antenna and NFC antenna. Comparison of the experimental results of the proposed receiving antenna with a general receiving antenna confirms the improvement in transmission efficiency.

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Study on high efficiency WPT underseas

Cited by 10 publications

References 1 publication

Enabling Underwater Wireless Power Transfer towards Sixth Generation (6G) Wireless Networks: Opportunities, Recent Advances, and Technical Challenges

Enabling Underwater Wireless Power Transfer towards Sixth Generation (6G) Wireless Networks: Opportunities, Recent Advances, and Technical Challenges

Design and Optimization of a Wireless Power Transfer System with a High Voltage Transfer Ratio

High-efficiency and compact WPT receiving antenna design using simulation optimization method

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