Analysis and Compensation of Incomplete Coupling for Omnidirectional Wireless Power Transfer

Wenbin Wang, Huayun Wang, Qiong Li, Jun Xu, Tianqi Meng, Bowen Zhang and Zhen Zhang
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Wenbin Wang: State Grid Jiangxi Electric Power Co. Ltd Electric Power Research Institute, Nanchang 330096, China
Huayun Wang: State Grid Jiangxi Electric Power Co. Ltd Electric Power Research Institute, Nanchang 330096, China
Qiong Li: State Grid Jiangxi Electric Power Co. Ltd Electric Power Research Institute, Nanchang 330096, China
Jun Xu: State Grid Jiangxi Electric Power Co. Ltd Electric Power Research Institute, Nanchang 330096, China
Tianqi Meng: State Grid Jiangxi Electric Power Co. Ltd Electric Power Research Institute, Nanchang 330096, China
Bowen Zhang: School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China
Zhen Zhang: School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China

Energies, 2019, vol. 12, issue 17, 1-16

Abstract: This paper proposes a detailed analysis of the incomplete coupling effect in omnidirectional wireless power transfer systems and a compensation method aiming to improve the transmission performance. Recently, omnidirectional wireless charging technologies have been gradually explored and studied. These charging technologies can transmit power to arbitrary directions in three-dimensional space. However, there are still specific regions where the transmitted power capability dramatically drops to an extremely low level due to the incomplete coupling effect. Accordingly, this paper provides a theoretical analysis and compensation of such an effect. The compensation effectiveness is validated by both a simulation and a 7 W experimental prototype. After the compensation, the transmitted power can be improved by 61% to drive the load in a full range of the space.

Keywords: contactless charging; inductive power transfer (IPT); omnidirectional; wireless power transfer (WPT) (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: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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