MEPT (Maximum Efficiency Point Tracking) Techniques for Wireless Electric Vehicle Battery Charging

Dear Colleagues,

The diffusion of electric vehicles (EVs) for both industrial and residential transportation is rapidly expanding due to the main objective of the world’s major economies of reaching carbon neutrality by mid-21st century. Nevertheless, mass adoption is possible only if it is accompanied by the availability of an adequate charging infrastructure. Comfortable, easy, quick, and safe charging is one of the main challenges EV industries currently face. For these reasons, wireless charging technology has been rapidly developing in recent years, with the aim of eliminating the disadvantages of plug-in charging, such as the use of bulky power cords, electrocution hazard, the use of space, etc. The most common method that has been implemented is inductive power transfer (IPT): in the primary side, a primary transmitter coil is fed by a switching inverter and energized by an AC current producing a time-varying magnetic field which is linked, in the secondary side, to a receiver coil, separated by a large air gap; the induced voltage in the secondary coil is rectified and used for battery charging. Controllers, matching circuits and sensors complete the system. It is well-known that the power transfer capability of these systems strongly depends on the misalignment between transmitter and receiver coils, which occurs when the relative distance between the coils is different from the optimal distance chosen in the design stage. One of the methods used to achieve high efficiency during misalignment is based on the adoption of suitable MEPT (maximum efficiency point tracking) control techniques on converters in the secondary side. This Special Issue welcomes original papers on innovative MEPT techniques expressly designed for wireless electric vehicle battery charging, thus giving researchers an opportunity to share and disseminate their latest results.

Prof. Dr. Carlo Petrarca
Prof. Dr. Marco Balato
Guest Editors

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