DESIGN OF AN INDUCTIVE POWER TRANSFER FOR VARYING LOAD CONDITIONS WITH A HIGH FREQUENCY PHASE LOCKED LOOP

This paper presents an inductive power transfer technology for the charging application of an electric vehicle (EV). The inductive power transfer has been an essential and effective way of transferring power to EV on the run. The frequency mismatch in between primary and secondary of inductive coupling is a major problem under a dynamic load condition of EV. In this paper, a suitable material and coil winding are chosen for primary and secondary coil to meet out the maximum inductive power transfer between the primary and secondary. Hence, a phase locked loop subsystem has been implemented for rectifying the frequency mismatch in between primary and secondary. The range of frequencies for which efficiency have been studied and analyzed under different load conditions. Finally, results have been obtained for a maximum power coupling as compared with conventional wireless transfer schemes.