Mapping Methodology for Self and Mutual Inductance Profiles in IPT Systems

Emanuel G. Marques (), André M. S. Mendes, Marina Perdigão and Valter S. Costa
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Emanuel G. Marques: DEEC, University of Coimbra, 3030-290 Coimbra, Portugal
André M. S. Mendes: DEEC, University of Coimbra, 3030-290 Coimbra, Portugal
Marina Perdigão: DEEC, Instituto de Telecomunicações, 3030-290 Coimbra, Portugal
Valter S. Costa: DEEC, University of Coimbra, 3030-290 Coimbra, Portugal

Energies, 2022, vol. 15, issue 17, 1-20

Abstract: Magnetic couplers (MC) are the key element that enable the power transfer over large air gaps in inductive power transfer (IPT) systems. Numerous designs with different coil and core arrangements have been proposed in the literature. However, the MC sizing process still involves several trial and error iterations to meet the desired specifications. This paper presents a profile methodology that uses fitting equations to extrapolate the coupling profiles and minimize the required number of finite element analysis (FEA) simulation results. A non-polarized circular coupler (FLCP) can be characterized as function of the air gap and lateral displacements using only six charging positions, whereas polarized couplers, such as the bipolar (BPP) or double-D pad (DDP), can be characterized using 18 charging positions. The methodology is validated experimentally using the FLCP, and an average error of 3% was found under different charging positions.

Keywords: electric vehicles (EVs); inductive power transfer (IPT); magnetic coupler (MC) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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