Dual Resonant Frequency Inductive Power Transfer in an Underwater Tight Coupling System

Jing Zhou, Pengzhi Yao, Rui He, Kan Guo, Yao Zhang and Hao Ma
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Jing Zhou: College of Electrical Engineering, University of Zhejiang, Hangzhou 310027, China
Pengzhi Yao: College of Electrical Engineering, University of Zhejiang, Hangzhou 310027, China
Rui He: College of Electrical Engineering, University of Zhejiang, Hangzhou 310027, China
Kan Guo: College of Electrical Engineering, University of Zhejiang, Hangzhou 310027, China
Yao Zhang: School of Automation, University of Hangzhou Dianzi, Hangzhou 310000, China
Hao Ma: College of Electrical Engineering, University of Zhejiang, Hangzhou 310027, China

Energies, 2021, vol. 14, issue 1, 1-15

Abstract: The application of wireless power transfer technology in the underwater environment proposes both opportunities and challenges to undersea power feeding. Due to the attenuation of electromagnetic waves in seawater, the distance between transmitter and receiver is always maintained at a minimum value, which results in tight coupling between the transmitter and receiver. The tight coupling condition provides a low impedance loop for high-order harmonic, so the component of the harmonic wave is thus significantly increased and cannot be ignored in the power transmission system. In order to fully utilize the harmonic energy, a fundamental-harmonic dual-channel system was proposed and studied in this paper. Compared with single-channel systems transmitting fundamental wave only, the dual-channel system has higher power transmission capability, while the loss in dual channel system can be less than that of a single-channel system after proper optimization. A 3 kW experiment platform is established to verify the effectiveness of theoretical analysis.

Keywords: inductive power transfer; resonant; harmonic; tight coupling (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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