Effect of Quality Factor on Determining the Optimal Position of a Transmitter in Wireless Power Transfer Using a Relay

2017 ◽  
Vol 27 (5) ◽  
pp. 521-523 ◽  
Author(s):  
Kisong Lee ◽  
Sung Ho Chae
Keyword(s):  
Quality Factor ◽  
Wireless Power Transfer ◽  
Power Transfer ◽  
Wireless Power ◽  
Optimal Position

scholarly journals Optimal Position of the Intermediate Coils in a Magnetic Coupled Resonant Wireless Power Transfer System

Energies ◽  
2019 ◽  
Vol 12 (20) ◽  
pp. 3991 ◽  
Author(s):  
Dongsheng Yang ◽  
Jiangwei Tian ◽  
Sokhui Won ◽  
Bowen Zhou ◽  
Zixin Cheng ◽  
...  
Keyword(s):  
Mathematical Expression ◽  
Wireless Power Transfer ◽  
Network Analyzer ◽  
Power Transfer ◽  
Wireless Power ◽  
Distance Ratio ◽  
Optimal Position ◽  
Experimental Platform ◽  
Load Power ◽  
Transmission Distance

Coaxial coil topology is used as the transfer medium in traditional MCR-WPT (Magnetic Coupled Resonant Wireless Power Transfer) systems to improve the transfer characteristics. The intermediate coils are added to extend the transmission distance, whose positions are critical. This paper focuses on the optimal intermediate coil positions for an MCR-WPT system with four coaxial planar circular spiral coils. By modeling the MCR-WPT system, the mathematical expression of the self-inductance and the mutual inductance are used to calculate the load power of the MCR-WPT system, which is composed of four planar circular spiral coaxial coils, and using MATLAB. The optimal distance ratio between the adjacent coils for maximizing the power of load is proposed. Furthermore, the experiments are implemented from the network analyzer and the experimental platform. In the platform, the load power is measured at the different intermediate coil positions, and the optimal position at which the load power is maximized is found. Both experimental results obtained by the network analyzer and the experimental platform have validated the theoretical and simulation results and provided the correctness of the suggested ratios.

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