A High Efficiency Charging Strategy for a Supercapacitor Using a Wireless Power Transfer System Based on Inductor-Capacitor-Capacitor LCC Compensation TopologyReportar como inadecuado


A High Efficiency Charging Strategy for a Supercapacitor Using a Wireless Power Transfer System Based on Inductor-Capacitor-Capacitor LCC Compensation Topology


A High Efficiency Charging Strategy for a Supercapacitor Using a Wireless Power Transfer System Based on Inductor-Capacitor-Capacitor LCC Compensation Topology - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

School of Electrical Engineering, Beijing Jiaotong University, No. 3 Shangyuancun, Beijing 100044, China





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Academic Editor: Hongjian Sun

Abstract In the application of rail transit vehicles, when using typical wireless power transfer WPT systems with series–series SS compensation supply power for supercapacitors, the output current is in an approximately inverse relationship with the duty cycle in a wide range. This renders the typical buck circuit control inappropriate. In order to help resolve the above issues, this paper designs inductor-capacitor-capacitor LCC compensation with new compensation parameters, which can achieve an adjustable quasi-constant voltage from the input of the inverter to the output of the rectifier. In addition, the two-port network method is used to analyze the resonant compensation circuit. The analysis shows that LCC compensation is more suitable for the WPT system using the supercapacitor as the energy storage device. In the case of LCC compensation topology combined with the charging characteristics of the supercapacitor, an efficient charging strategy is designed, namely first constant current charging, followed by constant power charging. Based on the analysis of LCC compensation, the system has an optimal load, by which the system works at the maximum efficiency point. Combined with the characteristics of the constant voltage output, the system can maintain high efficiency in the constant power stage by making constant output power the same as the optimal power point. Finally, the above design is verified through experiments. View Full-Text

Keywords: wireless power transfer; inductor-capacitor-capacitor LCC compensation; supercapacitor load; quasi-constant voltage gain; charging strategy wireless power transfer; inductor-capacitor-capacitor LCC compensation; supercapacitor load; quasi-constant voltage gain; charging strategy





Autor: Yuyu Geng * , Bin Li, Zhongping Yang, Fei Lin and Hu Sun

Fuente: http://mdpi.com/



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