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Open AccessArticle

A Three-Bridge IPT System for Different Power Levels Conversion under CC/CV Transmission Mode

School of Automation, Wuhan University of Technology, Wuhan 430000, China
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Author to whom correspondence should be addressed.
Electronics 2019, 8(8), 884; https://doi.org/10.3390/electronics8080884
Received: 25 July 2019 / Revised: 7 August 2019 / Accepted: 8 August 2019 / Published: 9 August 2019
(This article belongs to the Special Issue Power Converters in Power Electronics)
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Abstract

This paper proposes an inductive power transfer (IPT) system with three-bridge switching compensation topology. With the proposed IPT topology, the equivalent circuit and the resonant condition are analyzed to achieve the load-independent constant current (CC) and load-independent constant voltage (CV) outputs. On this basis, multiple power levels can be achieved under CC/CV conditions by bridge arm switching, which makes it possible to complete charging tasks for multiple power level electric vehicles (EV) without switching the IPT system. A circuit simulation was built to verify the different power level switching effects of the structure. A 3.3 kW IPT system was designed to verify the proposed structure. At the rated output power, the experimental efficiency was up to 92.04% and 91.21% in CC and CV output modes, respectively. View Full-Text
Keywords: inductive power transfer (IPT); three-bridge switching; constant current (CC); constant voltage (CV); fixed frequency inductive power transfer (IPT); three-bridge switching; constant current (CC); constant voltage (CV); fixed frequency
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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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Luo, B.; Shou, Y.; Lu, J.; Li, M.; Deng, X.; Zhu, G. A Three-Bridge IPT System for Different Power Levels Conversion under CC/CV Transmission Mode. Electronics 2019, 8, 884.

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