Underwater Wireless Power Transfer With High Tolerance to Misalignments

Lopes, Israel Filipe; Coelho, Daiana Carmo; Bojorge, Esteban Vicente Aguilar; Oliveira, Luiz Rogerio Andrade de; Almeida, Andrei de Oliveira; Barbosa, Pedro G.

doi:10.1109/cobep53665.2021.9684046

Cited by 4 publications

(5 citation statements)

References 10 publications

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“…When misalignment occur between the coils, coupling is reduced and ECL increase, causing a reduction in efficiency. Several studies have attempted to evaluate these losses [165][166][167], while others have designed coil topologies that try to address this issue [168][169][170][171][172]. Another possible solution is to achieve this alignment with a mechanical device [143].…”

Section: Sea Currents and Misalignmentmentioning

confidence: 99%

Wireless Power Transfer for Unmanned Underwater Vehicles: Technologies, Challenges and Applications

Martínez de Alegría,

Rozas Holgado,

Ibarra

et al. 2024

Energies

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Unmanned underwater vehicles (UUVs) are key technologies to conduct preventive inspection and maintenance tasks in offshore renewable energy plants. Making such vehicles autonomous would lead to benefits such as improved availability, cost reduction and carbon emission minimization. However, some technological aspects, including the powering of these devices, remain with a long way to go. In this context, underwater wireless power transfer (UWPT) solutions have potential to overcome UUV powering drawbacks. Considering the relevance of this topic for offshore renewable plants, this work aims to provide a comprehensive summary of the state of the art regarding UPWT technologies. A technology intelligence study is conducted by means of a bibliographical survey. Regarding underwater wireless power transfer, the main methods are reviewed, and it is concluded that inductive wireless power transfer (IWPT) technologies have the most potential. These inductive systems are described, and their challenges in underwater environments are presented. A review of the underwater IWPT experiments and applications is conducted, and innovative solutions are listed. Achieving efficient and reliable UWPT technologies is not trivial, but significant progress is identified. Generally, the latest solutions exhibit efficiencies between 88% and 93% in laboratory settings, with power ratings reaching up to 1–3 kW. Based on the assessment, a power transfer within the range of 1 kW appears to be feasible and may be sufficient to operate small UUVs. However, work-class UUVs require at least a tenfold power increase. Thus, although UPWT has advanced significantly, further research is required to industrially establish these technologies.

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Section: Sea Currents and Misalignmentmentioning

confidence: 99%

Wireless Power Transfer for Unmanned Underwater Vehicles: Technologies, Challenges and Applications

Martínez de Alegría,

Rozas Holgado,

Ibarra

et al. 2024

Energies

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show abstract

“…The graph shows almost symmetrical behavior which indicates that misalignment can occur on any side of a coil. In a recent study [120], Lopes et al presented two transformers with high tolerance to misalignment for battery charging application of AUVs. These transformers are comprised of two topologies which are commonly used in WPT systems: Solenoid-Planar Spiral and Solenoid-Solenoid.…”

Section: Retention and Alignmentmentioning

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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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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“…Modern Education and Computer Science, 2022, 4, 57-66 in both science and engineering. Besides electromagnetism, it helps to solve complex problems in other areas such as materials science, industry, medicine, physics, robotics, astronomy and space engineering [16,17,18,19,20,21,22,23,24]. For some 15 years, there have been a number of concerns aimed at exploring the ability of FEMM to meet the needs of electromagnetism teaching in higher education and beyond.…”

Section: Introductionmentioning

confidence: 99%

Solution for Using FEMM in Electrostatic Problems with Discrete Distribution Electric Charge

Osaci¹,

Cunțan²,

Baciu³

2022

IJMECS

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Finite Element Method Magnetics (FEMM) is an open source software package for solving electromagnetic problems based on the finite element method. The application can numerically solve linear electrostatic problems and magnetostatic 2D problems, respectively low frequency magnetic, linear harmonic and nonlinear. FEMM is a product much used in science and engineering that, in the last 15 years, has begun to be used more and more in the academic environment. Despite the fact that FEMM can be used to solve complex problems in science and engineering, electrostatic FEMM cannot work directly with discrete electric charge distributions, that is, point electric charge. This work presents a FEMM model for simulating point electric charge that can be used in case of electrostatic problems with discrete charge distributions. The numerical solution for the electrostatic field is compared with the analytical solution. This model can be used in the case of an assembly of point electric charges with axial symmetry.

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Underwater Wireless Power Transfer With High Tolerance to Misalignments

Cited by 4 publications

References 10 publications

Wireless Power Transfer for Unmanned Underwater Vehicles: Technologies, Challenges and Applications

Wireless Power Transfer for Unmanned Underwater Vehicles: Technologies, Challenges and Applications

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

Solution for Using FEMM in Electrostatic Problems with Discrete Distribution Electric Charge

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