Analysis and optimization of 3-coil magnetically coupled resonant wireless power transfer system for stable power transmission

2017 ◽  
Author(s):  
Weiwei Ye ◽  
Lu Chen ◽  
Fuxin Liu ◽  
Xuling Chen ◽  
Xuehua Wang
Keyword(s):  
Power Transmission ◽  
Wireless Power Transfer ◽  
Transfer System ◽  
Power Transfer ◽  
Wireless Power ◽  
Wireless Power Transfer System

scholarly journals An Improved Estimation Method of Mutual Inductance Angle for a Two-Dimensional Wireless Power Transfer System

Symmetry ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 448
Author(s):  
Sangyong Lee ◽  
Jeonho Lee ◽  
Jongkyum Kwon ◽  
Se-Kyo Chung
Keyword(s):  
Power Transmission ◽  
Estimation Method ◽  
Wireless Power Transfer ◽  
Transmission Efficiency ◽  
Mutual Inductance ◽  
Transfer System ◽  
Two Dimensional ◽  
Power Transfer ◽  
Wireless Power ◽  
Wireless Power Transfer System

The improvement of power transmission efficiency (PTE) is an important issue in the design of a wireless power transfer (WPT) system. The WPT system with multiple transmitting (Tx) or receiving (Rx) coils is a way to improve the PTE. This paper deals with the estimation of the mutual inductance angle for a two-dimensional (2D) WPT system with two Tx coils and one Rx coil. The mutual inductance angle is one of the most important parameters to determine the PTE in the 2D WPT system. The condition for the maximum PTE is investigated and the mutual inductance angle is defined for the 2D WPT system. An improved estimation method of the mutual inductance angle is proposed based on the phase-locked loop (PLL) technique using the voltages and currents of the Tx coils. The simulation and experimental results are provided to validate the effectiveness of the proposed method.

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