Modeling of dense windings for resonant wireless power transfer by an integral equation formulation

2016 ◽  
Author(s):  
Sandor Bilicz ◽  
Zsolt Badics ◽  
Szabolcs Gyimothy ◽  
Botond Balint ◽  
Jozsef Pavo
Keyword(s):  
Integral Equation ◽  
Wireless Power Transfer ◽  
Power Transfer ◽  
Wireless Power ◽  
Equation Formulation ◽  
Integral Equation Formulation

An integral equation formulation with global series expansion for resonant wireless power transfer

2017 ◽  
Vol 36 (5) ◽  
pp. 1474-1487
Author(s):  
Sándor Bilicz ◽  
József Pávó ◽  
Szabolcs Gyimóthy ◽  
Zsolt Badics
Keyword(s):  
Integral Equation ◽  
Series Expansion ◽  
Computational Cost ◽  
Wireless Power Transfer ◽  
Basis Functions ◽  
Power Transfer ◽  
Electromagnetic Modeling ◽  
Wireless Power ◽  
Content Type ◽  
Integral Equation Formulation

Purpose The electromagnetic modeling of inductively coupled, resonant wireless power transfer (WPT) is dealt with. This paper aims to present a numerically efficient simulation method. Design/methodology/approach Recently, integral equation formulations have been proposed, using piecewise constant basis functions for the series expansion of the current along the coil wire. In the present work, this scheme is improved by introducing global basis functions. Findings The use of global basis functions provides a stronger numerical stability and a better control over the convergence of the simulation; moreover, the associated computational cost is lower than for the previous schemes. These advantages are demonstrated in numerical examples, with special attention to the achievable efficiency of the power transfer. Practical implications The method can be efficiently used, e.g., in the optimal design of resonant WPT systems. Originality/value The presented computation scheme is original in the sense that global series expansion has not been previously applied to the numerical simulation of resonant WPT.

Integral Equation Formulations for Modeling Wireless Power Transfer Systems in Close Proximity to Foreign Objects

2019 ◽  
Vol 55 (6) ◽  
pp. 1-4
Author(s):  
Arnold Bingler ◽  
Sandor Bilicz ◽  
Zsolt Badics ◽  
Szabolcs Gyimothy ◽  
Jozsef Pavo
Keyword(s):  
Integral Equation ◽  
Wireless Power Transfer ◽  
Power Transfer ◽  
Wireless Power ◽  
Foreign Objects ◽  
Close Proximity

Scaling Law of Coupling Coefficient and Coil Size in Wireless Power Transfer Design via Magnetic Coupling

2017 ◽  
Vol 137 (4) ◽  
pp. 326-333
Author(s):  
Chiaki Nagai ◽  
Kenji Inukai ◽  
Masato Kobayashi ◽  
Tatsuya Tanaka ◽  
Kensho Abumi ◽  
...  
Keyword(s):  
Coupling Coefficient ◽  
Scaling Law ◽  
Magnetic Coupling ◽  
Wireless Power Transfer ◽  
Power Transfer ◽  
Wireless Power ◽  
Coil Size
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