Maximum Efficiency Point Tracking Control for Dynamic Wireless Power Transfer

Abstract

Wireless power transfer has evolved as a dominant research field. Roadway-powered vehicles have poor and fluctuating efficiency due to varying coupling coefficients because of their dynamic nature. Efficiency improvement efforts become useless in the event of communication failure between the transmitter and receiver sides. This paper presents a novel algorithm based on a silent handshake between the two sides to achieve the most efficient operation with varying flux linkage. The timed sequence of operations enables the continuous load mapping by impedance matching converter to maximize the efficiency followed by load regulation done by the supply converter based on accurate mathematical modelling. Simulation and experimental results are presented to ascertain the performance of the algorithm and the mathematical models.