Magnetic Coupling Characteristics and Efficiency Analysis of Spiral Magnetic Power Pads for Inductive WPT System
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Date
2022
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Publisher
River Publishers
Abstract
The inductive wireless power transfer system (IWPT) for electric vehicle battery charging works based on the principle of mutual induction (MI). The amount of power transfer from source to vehicle battery be contingent on the mutual inductance (MI) within the inductively coupled pads. This mutual inductance depends on the type of the inductive power pads, the distance among them, their positioning etc. This paper develops and study the inductive coupling characteristics of identical spiral circular and square inductive power pads. The coupling characteristics at various misalignments with different vertical distance between the coils is presented. In this work, the inductive power pads without using ferrite bars, and with ferrite bars are considered. The coupling characteristics of the spiral circular and square are computed using FEM simulations and validated with experimental results. This paper also investigated the power loss and efficiency analysis of the spiral inductive pads of the resonant IWPT system. © 2022 River Publishers.
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Keywords
Charging (batteries), Efficiency, Electric vehicles, Energy transfer, Inductance, Inductive power transmission, Magnetic couplings, Magnetic levitation vehicles, Secondary batteries, Characteristics analysis, Coupling characteristic, Coupling efficiency, Efficiency analysis, Electric vehicle batteries, Inductive wireless power transfer, Magnetic power pad, Mutual inductance, Power, Power transfer systems, Ferrite
Citation
Distributed Generation and Alternative Energy Journal, 2022, 37, 5, pp. 1703-1720