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

Comparative Analysis of power pad for Wireless Charging of Electric Vehicles 2019-01-0865

Electric Vehicle is a very potential alternative to gasoline vehicles. Major EV challenge is electrical energy charging and storage. Charging of the EV is a big challenge due to hours of time to charge. Wireless charging can automate the charging of EV, very easily connected with IoT based smart systems. Inductive wireless charging includes the concept of mutual induction between transmitter and receiver through a time-varying magnetic field. The efficiency of wireless charging collectively depends on the design of the power pad, frequency level of power transfer, the distance between the transmitter and receiver, alignment between the coils. Coils design comprehend the shape of the coil, material of the coil used, the thickness of the wire used and core shape and material used in the core. The manuscript compares the power pad coil shapes, with the introduction of ferrite core across the coils to design an extremely efficient power pad for the wireless charging of electric vehicle (EV). A 3D finite element method was used for analysis, due to the unconventional distribution of the flux. Only three types of coils, D, DD, and DDQ are taken for analysis of magnetic core introduction. The comparison is done 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 show the DD type coil shows 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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