Charging Time Control of Wireless Power Transfer Systems Without Using Mutual Coupling Information and Wireless Communication System

2017 ◽  
Vol 64 (1) ◽  
pp. 228-235 ◽  
Author(s):  
Wenxing Zhong ◽  
S. Y. Ron Hui
Keyword(s):  
Wireless Communication ◽  
Communication System ◽  
Mutual Coupling ◽  
Wireless Power Transfer ◽  
Power Transfer ◽  
Wireless Power ◽  
Wireless Communication System ◽  
Time Control ◽  
Charging Time

scholarly journals A Method of Estimating Mutual Inductance and Load Resistance Using Harmonic Components in Wireless Power Transfer System

Energies ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2728 ◽  
Author(s):  
Dongsheng Yang ◽  
Sokhui Won ◽  
Jiangwei Tian ◽  
Zixin Cheng ◽  
Jongho Kim
Keyword(s):  
Wireless Communication ◽  
Wireless Power Transfer ◽  
Mathematic Model ◽  
Load Resistance ◽  
Mutual Inductance ◽  
Transfer System ◽  
Power Transfer ◽  
Wireless Power ◽  
Wireless Power Transfer System ◽  
Harmonic Components

In general, for the WPT (Wireless Power Transfer) system, as the mutual inductance and load resistance are calculated according to the measured data of both the transmitter and receiver, the wireless communication modules are needed to share data. A method for estimating mutual inductance and load resistance without wireless communication is proposed, based on the fundamental and third harmonic components. The circuit is decomposed with respect to the frequencies, by which the mathematic model is established. The fundamental and harmonic components of the output voltage and current of a high-frequency inverter are found by FFT (Fast Fourier Transform). The experimental WPT system with a SiC power MOSFET is designed, and the effectiveness of the proposed method is verified by the simulation and experiment results. Additional hardware and frequency scanning operation are not needed because of the use of the harmonic components.

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