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Dish-Shape Magnetic Flux Concentrator for Inductive Power Transfer Systems

Marwan H. Mohammed 1, Yasir M. Y. Ameen 1, and Ahmed A. S. Mohamed 2
1. Department of Electrical Engineering, University of Mosul, Iraq
2. National Renewable Energy Laboratory (NREL), Golden, CO 80401-3393, USA
Abstract—Recently, safety concerns related to electro-magnetic fields (EMFs) in inductive power transfer (IPT) systems for electric vehicles applications are pointed out. Magnetic flux concentrators are commonly used in the system to direct magnetic field lines and enhance the power transfer capability and efficiency. This article explores the performance of an IPT system for two different shapes of magnetic flux concentrators in terms of magnetic field distribution and power transmission efficiency. The dish-shape and plate-shape flux concentrators are examined and compared with a coreless IPT system. A simulation study based on three-dimensional finite-element analysis is carried out to design the magnetic couplers and analyze the IPT system’s performance. The simulation results are verified analytically and good matches are achieved.
 
Index Terms—Inductive Power Transfer (IPT), magnetic flux concentrator, magnetic field distribution, power transfer efficiency, Wireless Power Transfer (WPT)

Cite: Marwan H. Mohammed, Yasir M. Y. Ameen, and Ahmed A. S. Mohamed, "Dish-Shape Magnetic Flux Concentrator for Inductive Power Transfer Systems," International Journal of Electrical and Electronic Engineering & Telecommunications, Doi: 10.18178/ijeetc.191210
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