Analysis of the Influence of Compensation Capacitance Errors of a Wireless Power Transfer System with SS Topology

Yi Wang, Fei Lin, Zhongping Yang and Zhiyuan Liu
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Yi Wang: School of Electrical Engineering, Beijing Jiaotong University, Shangyuan Village No. 3, Haidian District, Beijing 100044, China
Fei Lin: School of Electrical Engineering, Beijing Jiaotong University, Shangyuan Village No. 3, Haidian District, Beijing 100044, China
Zhongping Yang: School of Electrical Engineering, Beijing Jiaotong University, Shangyuan Village No. 3, Haidian District, Beijing 100044, China
Zhiyuan Liu: School of Electrical Engineering, Beijing Jiaotong University, Shangyuan Village No. 3, Haidian District, Beijing 100044, China

Energies, 2017, vol. 10, issue 12, 1-14

Abstract: In this study, in order to determine the reasonable accuracy of the compensation capacitances satisfying the requirements on the output characteristics for a wireless power transfer (WPT) system, taking the series-series (SS) compensation structure as an example, the calculation formulas of the output characteristics, such as the power factor, output power, coil transfer efficiency, and capacitors’ voltage stress, are given under the condition of incomplete compensation according to circuit theory. The influence of compensation capacitance errors on the output characteristics of the system is then analyzed. The Taylor expansions of the theoretical formulas are carried out to simplify the formulas. The influence degrees of compensation capacitance errors on the output characteristics are calculated according to the simplified formulas. The reasonable error ranges of the compensation capacitances are then determined according to the requirements of the output characteristics of the system in the system design. Finally, the validity of the theoretical analysis and the simplified processing is verified through experiments. The proposed method has a certain guiding role for practical engineering design, especially in mass production.

Keywords: wireless power transfer (WPT) system; series-series (SS) topology; compensation errors (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: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (9)

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