Continuous Dynamic Wireless Power Transfer for Circular Roadway with Optimal Load: Design and Analysis

The importance of dynamic wireless power transfer (DWPT) has increased significantly resulting from the development of electric mobility devices (EMDs). How to enlarge endurance with limited battery capacity has become a vital issue in the studies of EMDS, and the DWPT system has been foreseen as an emerging technology for this issue. In this paper, a continuous DWPT system has been investigated with the use of DD-shaped (bipolar) coils and Q-shaped (unipolar) coils in order to solve the problem of output power pulsation during the movement. To meet the practice of curved roadways and transfer efficiency, the design and analysis of transmitters and receivers for circular and athletic-field-like roadways are presented. The coupling coefficients and mutual inductance of the continuous DWPT system are addressed provided simulation validation and experimental test.