A loosely coupled distributed antenna array for lateral misalignment-improved near-field wireless power transfer system

2015 ◽  
Vol 57 (12) ◽  
pp. 2829-2833 ◽  
Author(s):  
Wang-Sang Lee ◽  
Sungsoo Park ◽  
Jaeho Lee
Keyword(s):  
Antenna Array ◽  
Near Field ◽  
Wireless Power Transfer ◽  
Transfer System ◽  
Power Transfer ◽  
Wireless Power ◽  
Loosely Coupled ◽  
Distributed Antenna ◽  
Wireless Power Transfer System

scholarly journals Tuning of a wireless power transfer system with a hybrid capacitor array

2016 ◽  
Vol 3 (1) ◽  
pp. 9-14
Author(s):  
Nurcan Keskin ◽  
Huaping Liu
Keyword(s):  
Resonant Frequency ◽  
Hybrid Model ◽  
Wireless Power Transfer ◽  
Transfer System ◽  
Power Transfer ◽  
Wireless Power ◽  
Loosely Coupled ◽  
Capacitor Array ◽  
Power Transfer Efficiency ◽  
Wireless Power Transfer System

Power transfer efficiency in loosely coupled inductive systems can be enhanced by resonance. Primary and secondary can be tuned to same resonant frequency. In this paper, MOSFET-based Varactors and switchable capacitors are used for re-tuning of such a system at 13.56 MHz. This is achieved either using each cap structure alone or as a hybrid model. These techniques are designed for 13.56 MHz wireless power transfer system.

Optimal Range of Coupling Coefficient of Loosely Coupled Transformer Considering System Resistance

2021 ◽  
Vol 35 (11) ◽  
pp. 1368-1369
Author(s):  
Jiawei Ge ◽  
Hassan Eldeeb ◽  
Kun Liu ◽  
Jinping Kang ◽  
Haisen Zhao ◽  
...  
Keyword(s):  
Output Power ◽  
Coupling Coefficient ◽  
Wireless Power Transfer ◽  
Transfer System ◽  
Power Transfer ◽  
Wireless Power ◽  
Optimal Range ◽  
Loosely Coupled ◽  
System A ◽  
Wireless Power Transfer System

Accurate system resistance may lead to an obvious error between the simulated and the real efficiency of the system. This paper proposes an optimal range of coupling coefficient for ensuring the efficiency and the sufficient output power of the WPT (wireless power transfer) system. A 3-kW prototype WPT system is manufactured and the effectiveness of the optimal range of coupling coefficient is validated.

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