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Energies 2019, 12(1), 172; https://doi.org/10.3390/en12010172

An LCC-P Compensated Wireless Power Transfer System with a Constant Current Output and Reduced Receiver Size

1
School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China
2
Department of Electrical and Computer Engineering, San Diego State University, San Diego, CA 92182, USA
*
Authors to whom correspondence should be addressed.
Received: 14 November 2018 / Revised: 28 December 2018 / Accepted: 4 January 2019 / Published: 6 January 2019
(This article belongs to the Special Issue Wireless Power for Electric Vehicles)
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Abstract

Wireless Power Transfer (WPT) for autonomous underwater vehicles (AUVs) has been a research focus in recent years. This paper studies the inductor-capacitor-capacitor and parallel (LCC-P) compensation topology to achieve a compact receiver for AUVs. Unlike the series-series (SS) compensation topology, the LCC-P topology retains the advantages of the double-sided LCC topology and has a more compact receiver than the double-sided LCC topology with fewer elements used on the receiver side. The analytical model of such a WPT system is established to analyze the output power and transfer efficiency. The LCC-P topology has a higher efficiency compared to the SS topology due to the smaller conduction loss of the inverter. Moreover, a method of eliminating the DC filter inductor L0 is proposed to further decrease the size and weight of the receiver. The amplitude of the withstanding voltage on the receiver compensation capacitor without L0 is approximately decreased by 40% compared to that with L0. Both cases of with and without L0 have a constant current output and the peak efficiency without L0 is about 94%, which is 1% lower than that with L0. A prototype was built and the experimental results verified the theoretical analysis. View Full-Text
Keywords: wireless power transfer (WPT); compact receiver; constant current output; inductor-capacitor-capacitor and parallel (LCC-P) wireless power transfer (WPT); compact receiver; constant current output; inductor-capacitor-capacitor and parallel (LCC-P)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Yan, Z.; Zhang, Y.; Song, B.; Zhang, K.; Kan, T.; Mi, C. An LCC-P Compensated Wireless Power Transfer System with a Constant Current Output and Reduced Receiver Size. Energies 2019, 12, 172.

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