The coil configuration is a critical element in wireless charging systems for electric vehicles (EVs). This paper presents a thorough comparison of commonly used circular, rectangular, and hexagonal coils for WPT application, specifically analyzing, reviewing, and evaluating their major electrical and physical properties. This paper includes two revised analytical models (optimized and non-optimized), Finite Element Analysis (FEA) analysis conducted on Ansys Maxwell, MATLAB Simulink results, and their experimental validation for all the coil mentioned above shapes to comprehensively compare some of their important parameters that impact the WPT system performance such as self-inductance, EMI performance, resistance, quality factor, volume, power transfer efficiency, weight, and cost. All the simulations are carried out for level 1 WPT (3.7 kW) whereas the experimental validation is performed for 2 kW.
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Son et al. (2024) studied this question.
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