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| Research on Single Capacitive Coupled Wireless Power Transfer System with Double-Side LC Compensation |
| Liu Zhe1, Su Yugang1,2, Deng Renwei1, Qian Linjun1, Dai Xin1,2 |
1. School of Automation Chongqing University Chongqing 400043 China;
2. National Center for International Research on Wireless Power Transfer Technology Chongqing 400043 China |
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Abstract The single capacitive coupled wireless power transfer (SCC-WPT) could be eliminate the effects of cross-coupled capacitance in traditional EC-WPT and the SCC-WPT system is suitable for wireless power transfer of two-dimensional planar mobile devices. However, the application of the existed SCC-WPT systems is limited by the low output power and low transmission efficiency. This paper proposed a double-side LC compensation topology and two parameter design method for the SCC-WPT system, which can improve the output power and efficiency greatly. The experimental prototype is built based on the proposed topology and parameter design methods. The energy efficiency characteristics, output characteristics, and misalignment tolerance of the system are studied by experiments. The experimental prototype reaches a dc-dc efficiency of 85.9% at 1.43kW output power with the constant current when the LCC resonance method is adopted. When the LC resonance method is adopted, the experimental results achieve dc-dc efficiency of 91.9% at 1.24kW with the constant voltage. Meanwhile, the two ways have better misalignment tolerance. This paper provides a new study idea for the SCC-WPT system. The study of this paper is helpful to promote the mechanism research of the SCC-WPT system and the further development of the SCC-WPT technology.
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Received: 13 July 2021
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2022, Vol. 37 
