Design and Implementation of Underwater Inductive Power Transfer Systems With An Accurate Eddy Current Loss Model Approach


Shafiei S. Yazdi S.S.H. Kapanov A. Kermani M. Saukhimov A. Hekmati A. Bagheri M.
2025Institute of Electrical and Electronics Engineers Inc.

IEEE Transactions on Industry Applications
2025#61Issue 23359 - 3370 pp.

This study analyzes an underwater inductive wireless power transfer (UIWPT) to be used in offshore vehicles. Fixating on inadvertent eddy current losses (ECLs), this study offers an approach to tackle this concern based on the optimal selection of main design parameters of Archimedean magnetic coils. An accurate analytical electromagnetic field model is derived for directly calculating ECLs, and based on the ECL model, the main design parameters of coils are selected. The electrical fundamental components of coils are calculated as a function of the selected design parameters. A numerical metaheuristic optimization method along with the formulation of a multi-objective function and inequality constraints is utilized to estimate the selected parameters of coils. This function addresses various design objectives simultaneously, considering the water medium and inequality constraints. For optimization purposes, an electrical equivalent circuit model is derived, considering the ECLs impact by reflecting these losses in the equivalent circuit model. The ECL model is verified through Finite Element Analysis (FEA). Finally, a laboratory scale setup is developed and UIWPT experiments are conducted to validate the equivalent circuit and analytical modeling, the calculation of components, and the simulation study.

Eddy currents modeling , electric boat , numerical optimization , underwater inductive power transfer , wireless power transfer

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Nazarbayev University, Department of Electrical and Computer Engineering, School of Engineering and Digital Sciences (SEDS), Astana, 010000, Kazakhstan
University of Skövde, School of Engineering Sciences, Skövde, 541 28, Sweden
University of Power Engineering and Telecommunications, Department of Electrical Systems and Networks, Almaty, 050013, Kazakhstan
Revterra Company, Houston, 77045, TX, United States

Nazarbayev University
University of Skövde
University of Power Engineering and Telecommunications
Revterra Company

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