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Analysis of mutual inductance between transmitter and receiver coils in Wireless Power Transfer System of Electric Vehicle

Junlong Zheng, Chaiyan JETTANASEN

DOI: 10.15598/aeee.v21i3.4991


Abstract

In the electric vehicle wireless power transfer (WPT) system, the mutual inductance coefficient (M) between the transmitting and receiving coils is an important factor influencing overall system efficiency. We reviewed a large number of research papers in this field but did not find a detailed analysis of the M. There are two contributions in this paper. First, the detailed mathematical model of the M was developed. Second, the three-dimensional spatial distribution diagram of the M was drawn using Python software, and the maximum value and its corresponding position coordinates were calculated. Then, the theoretical analysis of the M distribution in this paper was proven correct through experiments. The theoretical analysis and experimental verification of the M distribution in this paper provided a theoretical reference for the positioning requirements in the electric vehicle WPT system between the transmitting and receiving coils.

Keywords


Electric vehicle, Wireless power transfer; Magnetic field, Mutual inductance

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