Zhimeng Liu, Lifang Wang, Chengliang Yin, Yanjie Guo, Chengxuan Tao
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A Research on Constant Voltage Output Characteristics of Wireless Power Transfer System with A DC-DC Converter
This paper presents the analysis of constant voltage (CV) output wireless power transfer (WPT) system with a DC-DC converter load, including characteristics of system efficiency and output voltage. Firstly, the WPT system model with LCC/S compensation network and a DC-DC converter is established. Then, system transmission power and efficiency are deduced on the CV condition, and the boost circuit’s influence on the WPT system is analyzed. Finally, a 1kW WPT prototype is built and simulations are conducted. Experimental results have proved that a proper DC-DC converter can improve the WPT system’s efficiency and the WPT system can keep a constant output voltage.
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