Browse Publications Technical Papers 2019-01-0865
2019-04-02

Comparative Analysis of Power Pad for Wireless Charging of Electric Vehicles 2019-01-0865

Wireless charging of Electric Vehicle adhere the mutual induction to transmit power to the battery and eliminates need of wire and physical connection. Power pad design, frequency of power transfer, distance between transfer coils and alignment of transfer coils are critical challenges of EV wireless charging. Power pad design entails optimization of coil shape and size, core shape, and material of coil and core along with economic analysis. The manuscript compares the already available coil shapes, with the introduction of ferrite core across the coils to design an extremely efficient power pad for the wireless charging of EV. A 3D finite element method (FEA) is being used for analysis, due to the unconventional distribution of the flux. Only three types of coils, D, DD, and DDQ, are taken to analyze the effect of magnetic ferrite core. The comparison is made based on simulation results, magnetic flux pattern as well as data imported from the results. Ansys 3D Maxwell simulation software is used to simulate the magnetic pattern of the power pad coils. Finally, the results shows the DD type coil are having the best magnetic fields and the maximum coupling coefficient with the maximum misalignment tolerance and the ferrite core across the coils have aligned the magnetic flux pattern and slightly improved the coupling coefficient.

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