Abstract

Underwater Wireless Power Transfer (WPT) has attracted much attention in recent years. In an underwater WPT system, the eddy current loss tends to be non-negligible as the frequency and current increase. Thus, it is crucial to analyze the eddy current loss in an underwater WPT system. The analytical model of the eddy current loss of a coreless WPT system in seawater is established with Maxwell’s equations. The expressions of the electric field intensity and the eddy current loss are derived and the eddy current loss is analyzed in different circumstances. An underwater WPT prototype is set up and the experimental results verify the theoretical analysis.

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