Sensitivity analysis of L-type impedance matching circuits for inductively coupled wireless power transfer

2019 ◽  
Vol 61 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Yuhua Cheng ◽  
Gaorong Qian ◽  
Guoxiong Chen ◽  
Haoran Sun ◽  
Gaofeng Wang
Keyword(s):  
Sensitivity Analysis ◽  
Impedance Matching ◽  
Wireless Power Transfer ◽  
Power Transfer ◽  
Wireless Power ◽  
Inductively Coupled

scholarly journals Analysis and Introduction of Effective Permeability with Additional Air-Gaps on Wireless Power Transfer Coils for Electric Vehicle Based on SAE J2954 Recommended Practice

Energies ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4797 ◽  
Author(s):  
Dongwook Kim ◽  
Hongseok Kim ◽  
Anfeng Huang ◽  
Qiusen He ◽  
Hanyu Zhang ◽  
...  
Keyword(s):  
Coupling Coefficient ◽  
Effective Permeability ◽  
Impedance Matching ◽  
Wireless Power Transfer ◽  
The Self ◽  
Power Transfer ◽  
Wireless Power ◽  
Electrical Parameters ◽  
Testing Procedures ◽  
Receiving Coil

The wireless power transfer (WPT) method for electric vehicles (EVs) is becoming more popular, and to ensure the interoperability of WPT systems, the Society of Automotive Engineers (SAE) established the J2954 recommended practice (RP). It includes powering frequency, electrical parameters, specifications, testing procedures, and other contents for EV WPT. Specifically, it describes the ranges of self-inductances of the transmitting coil, the receiving coil, and coupling coefficient (k), as well as the impedance matching values of the WPT system. Following the electrical parameters listed in SAE J2954 RP is crucial to ensure the EV wireless charging system is interoperable. This paper introduces a method for adjusting the effective permeability of the ferrite blocks in the standard model, to tune the self-inductance of the coils as well as the coupling coefficient. To guarantee the given values of the self-inductance of the coil and coupling coefficient matched those in the standard, we slightly modified the air-gap between the ferrite tiles in a specific region. Based on this method, it was possible to successfully tune the self-inductance of the transmitting coil and receiving coil as well as the coupling coefficient. The proposed method was verified by simulation and experimental measurements.

Electrifying the disk: a modular rotating platform for wireless power and data transmission for Lab on a disk application

Lab on a Chip ◽  
2015 ◽  
Vol 15 (12) ◽  
pp. 2584-2587 ◽  
Author(s):  
Jens Höfflin ◽  
Saraí M. Torres Delgado ◽  
Fralett Suárez Sandoval ◽  
Jan G. Korvink ◽  
Dario Mager
Keyword(s):  
Data Transmission ◽  
Wireless Power Transfer ◽  
Power Transfer ◽  
Wireless Power ◽  
Rotating Platform ◽  
Inductively Coupled ◽  
Spinning Disk ◽  
The Future ◽  
Coupled Coils

We present a design for wireless power transfer, via inductively coupled coils, to a spinning disk. This is an important demonstration of what we believe will have numerous applications in the future.

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