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JPE, Vol. 17, No. 4, July 2017
Study of Constant Current-Constant Voltage Output Wireless Charging System Based on Compound Topologies
Linlin Tan, Shulei Pan, Changfu Xu, Changxin Yan, Han Liu, and Xueliang Huang
Area Other Applications
Abstract Wireless power transfer (WPT) technology has the advantages of intelligence and facilitation. This paper designs a WPT system applied to battery charging and provides a strategy which switches from the constant current (CC) charging mode to constant voltage (CV) charging mode. The LCL-LCL topology is used to realize the CC output, while the LCL-S (series compensation) topology is used to realize the CV output. The main factor affecting the output characteristics is extracted by analyzing the two topologies above. Based on the main factor, this paper puts forward a modified way to design the system. In addition, on-line monitors for the battery and switches are placed at receiving side, which avoids the need for introducing an information interaction module into the system. Therefore, the complexity of the controlling system is reduced. Finally, simulation and experimental analyses are carried out to verify the correctness of the compound topologies.
Keyword Constant current (CC) output,Constant voltage (CV) output,Switching strategy,Wireless power transfer (WPT)
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