Abstract
AbstractIn this paper, an underwater single‐capacitor coupled wireless power transmission (USCC‐WPT) system is proposed, which operates at 200 kHz and can transmit 1 kW of power at 1 m in seawater with an efficiency of 76%. The USCC‐WPT system produces no eddy current losses in seawater, and the distance is increased compared to conventional inductive power transfer systems. The system proposed in this paper has a wide range of applications underwater. The load‐independent constant voltage (CV) output and misalignment tolerance properties of the USCC‐WPT system are analyzed and validated by an equivalent circuit model constructed from the stray capacitance. The 1 kW prototype demonstrates the feasibility of the USCC‐WPT system proposed in this paper, while the system can work properly with 50 cm misalignment.
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