Analysis of wireless power transfer based on metamaterial using equivalent circuit

The metamaterial (MA) has been proved to enhance the efficiency of the wireless power transfer (WPT) system considerably in many studies. This study presents an equivalent circuit model using a qualitative and even quantitative simple explanation for the behaviour of MA in WPT. For this purpose, the...

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Bibliographic Details
Published in:Journal of engineering (Stevenage, England) England), 2019-03, Vol.2019 (16), p.2032-2035
Main Authors: Rong, Cancan, Lu, Conghui, Hu, Zhaoyang, Huang, Xiutao, Tao, Xiong, Wang, Shengming, Wei, Bin, Wang, Songcen, Liu, Minghai
Format: Article
Language:English
Subjects:
circuit structure
coils
design system simulation
electromagnetic field simulation
electromagnetic fields
equivalent circuit model
equivalent circuits
high-frequency structure
inductive power transmission
metamaterial
metamaterials
optical design techniques
qualitative explanation
system parameters
The 14th IET International Conference on AC and DC Power Transmission (ACDC 2018)
three-dimensional electromagnetic simulator
transfer characteristics
transmission efficiency
transmission line circuit model
wireless power transfer system
WPT system
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Summary:The metamaterial (MA) has been proved to enhance the efficiency of the wireless power transfer (WPT) system considerably in many studies. This study presents an equivalent circuit model using a qualitative and even quantitative simple explanation for the behaviour of MA in WPT. For this purpose, the electromagnetic field simulation of WPT system with MA is carried out by the high-frequency structure simulation three-dimensional electromagnetic simulator. Also, the authors propose the circuit structure of the WPT system based on MA and explore its characteristics by numerical calculation and advanced design system simulation. The transmission efficiency of the simulator is characterised by reflection coefficient here. Although some methods, such as interference theory, transmission line circuit model, and effective medium theory, have been put forward to explain the physics mechanism of WPT system with MA, some of reactive parameters and the basic physical interpretation have not been expounded clearly so far. Differ from the existing theoretical model, the proposed approach focuses on the effect of the system parameters of MA and transfer coils on the transfer characteristics and is beneficial to the analysis of the complicated system.
ISSN:2051-3305
2051-3305
DOI:10.1049/joe.2018.8676