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Keywords = inductor-capacitor-capacitor and parallel (LCC-P)

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13 pages, 5468 KB  
Article
Design of LCC-P Constant Current Topology Parameters for AUV Wireless Power Transfer
by Kangheng Qiao, Enguo Rong, Pan Sun, Xiaochen Zhang and Jun Sun
Energies 2022, 15(14), 5249; https://doi.org/10.3390/en15145249 - 20 Jul 2022
Cited by 10 | Viewed by 2488
Abstract
The wireless power transmission (WPT) of an autonomous underwater vehicle (AUV) tends to have non-negligible eddy current loss with increasing frequency or coil current due to the conductivity of seawater. In this paper, the inductor-capacitor-capacitor and parallel (LCC-P) topology and the magnetic coupler [...] Read more.
The wireless power transmission (WPT) of an autonomous underwater vehicle (AUV) tends to have non-negligible eddy current loss with increasing frequency or coil current due to the conductivity of seawater. In this paper, the inductor-capacitor-capacitor and parallel (LCC-P) topology and the magnetic coupler with an H-shaped receiver structure are chosen to achieve a compact system on the receiving side. The conditions for constant current output of the LCC-P topology are analyzed based on the cascaded circuit analysis method. The traditional parameter design method does not consider the influence of eddy current loss on the system circuit model, by introducing the equivalent eddy current loss resistance at both the transmitting side and receiving side, a modified circuit model of the WPT system in the seawater condition was obtained. Afterward, a nonlinear programming model with the optimal efficiency of the constant current mode as the objective function is established, and the genetic algorithm is used to obtain the optimal system parameters. An underwater AUV-WPT prototype was built and the finite element simulation and experimental results verified the theoretical analysis. Full article
(This article belongs to the Topic Coil, Circuit and Control Designs for Future Wireless Power Transfer Systems in Electric Vehicle Applications)
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14 pages, 3627 KB  
Article
An LCC-P Compensated Wireless Power Transfer System with a Constant Current Output and Reduced Receiver Size
by Zhengchao Yan, Yiming Zhang, Baowei Song, Kehan Zhang, Tianze Kan and Chris Mi
Energies 2019, 12(1), 172; https://doi.org/10.3390/en12010172 - 6 Jan 2019
Cited by 40 | Viewed by 7793
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 [...] Read more.
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. Full article
(This article belongs to the Special Issue Wireless Power for Electric Vehicles)
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