Analysis and Design of Wireless Power Transfer Systems Applied to Electrical Vehicle Supercapacitor Charge Using Variable-Resistance-Based Method

Yuyu Geng, Tao Wang (), Shiyun Xie and Yi Yang
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Yuyu Geng: College of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing 400054, China
Tao Wang: College of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing 400054, China
Shiyun Xie: College of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing 400054, China
Yi Yang: College of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing 400054, China

Energies, 2022, vol. 15, issue 16, 1-15

Abstract: Supercapacitors (SCs) are widely used as energy storage devices in many practical applications of wireless power transfer. However, the modeling and analysis of a wireless power transfer system are seldom based on SC load; thus, the effects of the charging process on the wireless power transfer system cannot be analyzed clearly. In this paper, a variable-resistance-based method is proposed for the modeling and analysis of the process of constant current charging. First, how to make an SC equivalent in variable resistance is described, and the relationship between SC and variable resistance is considered. Next, the charging process, including charging current, voltage, power and transfer efficiency, is analyzed in detail. Furthermore, the effects of transmitting side voltage and frequency offset on this system are studied, and the optimal design method for an SC-load WPT system is provided on a preliminary basis. Finally, the theoretical derivation and analysis are verified by means of simulations and experiments.

Keywords: wireless power transfer; supercapacitor charging; variable-resistance-based; characteristic analysis (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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