scholarly journals Mutual Inductance Calculation of Circular Coils Sandwiched between 3-Layer Magnetic Mediums for Wireless Power Transfer Systems

Electronics ◽  
2021 ◽  
Vol 10 (23) ◽  
pp. 3043
Author(s):  
Minsheng Yang ◽  
Zhongqi Li ◽  
Min Zhang ◽  
Jingying Wan
Keyword(s):  
Calculation Method ◽  
Maxwell Equations ◽  
Power Transmission ◽  
Mutual Inductance ◽  
Magnetic Vector Potential ◽  
Analysis Method ◽  
Wireless Power ◽  
Wireless Power Transmission ◽  
Power Transmission Systems ◽  
Bessel Transform

The mutual inductance between coils directly affects many aspects of performance in wireless power transmission systems. Therefore, a reliable calculation method for the mutual inductance between coils is of great significance to the optimal design of transmission coil structures. In this paper, a mutual inductance calculation for circular coils sandwiched between 3-layer magnetic mediums in a wireless power transmission system is proposed. First, the structure of circular coils sandwiched between 3-layer magnetic mediums is presented, and then a mutual inductance model of the circular coils is established. Accordingly, a corresponding magnetic vector potential analysis method is proposed based on Maxwell equations and the Bessel transform. Finally, the mutual inductance calculation method for circular coils between 3-layer magnetic mediums is obtained. The correctness of the proposed mutual inductance calculation method is verified by comparing the calculated, simulated, and measured mutual inductance data.

scholarly journals Efficient Rectifier for Wireless Power Transmission Systems

2020 ◽  
Vol 68 (5) ◽  
pp. 1921-1932 ◽  
Author(s):  
Samuel A. Rotenberg ◽  
Symon K. Podilchak ◽  
Pascual D. Hilario Re ◽  
C. Mateo-Segura ◽  
George Goussetis ◽  
...  
Keyword(s):  
Power Transmission ◽  
Wireless Power ◽  
Wireless Power Transmission ◽  
Transmission Systems ◽  
Power Transmission Systems

scholarly journals Optimization Design for Receiving Coil with Novel Structure Based on Mutual Coupling Model in Wireless Power Transmission for Capsule Endoscope

Energies ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 6460
Author(s):  
Shuai Kuang ◽  
Guozheng Yan ◽  
Zhiwu Wang
Keyword(s):  
Optimization Design ◽  
Power Transmission ◽  
Biological Tissues ◽  
Mutual Inductance ◽  
Power Measurement ◽  
Capsule Endoscope ◽  
Wireless Power ◽  
Wireless Power Transmission ◽  
Sufficient Power ◽  
Receiving Coil

Wireless capsule endoscope (WCE) is a promising technology for noninvasive and painless imaging detection on gastrointestinal (GI) diseases. On the other hand, conventional endoscopes with wires could discomfort patients and cause them to vomit and aerosolize coronavirus if the patients are infected with COVID-19. However, there stands a technical bottleneck on power supply for the WCE. With the help of wireless power transmission technology, a hollow receiving coil (RC) is proposed to supply sufficient power and also minimize the size of WCE. A model on mutual inductance between transmitting and receiving coils is proposed to evaluate receiving power when the RC is in a different position and direction of patient’s GI tract. Based on the model, an optimal RC is built to obtain sufficient and stable power. Measurement of mutual inductance with the optimal RC validates high accuracy of the proposed model. The standard deviation of receiving power is very low. WCE with optimum RC gets sufficient power and captures images stably in live pig’s intestine tract. Additionally, the model is little affected by biological tissues. It ensures reliable performance of WCE and makes popular clinical application of WCE possible, which is also a relief to reduce epidemics like COVID-19.

scholarly journals The European Legislation Applicable to Medium-Range Inductive Wireless Power Transmission Systems

2014 ◽  
Vol 2014 ◽  
pp. 1-10
Author(s):  
Frédéric Broydé ◽  
Evelyne Clavelier ◽  
Lucie Broydé
Keyword(s):  
Electromagnetic Compatibility ◽  
Power Transmission ◽  
Secondary Coil ◽  
Main Question ◽  
The European Union ◽  
Wireless Power ◽  
Wireless Power Transmission ◽  
Transmission Systems ◽  
Medium Range ◽  
Power Transmission Systems

Medium-range inductive wireless power transmission systems allow a sufficient power transfer without requiring close proximity between a primary coil and a secondary coil. We briefly investigate the range of a typical system and its radiated emission, from the perspectives of electromagnetic compatibility (EMC) and human exposure requirements. We then discuss the applicable legislation in the European Union, the main question being the applicability of the R&TTE or radio equipment directives. Our conclusion is that this applicability depends on multiple parameters, among which is the presence of a self-tuning capability or of a transmitter control based on telemetry.

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