Maximizing Energy Transfer in Wireless Power Transfer Systems Using Maximum Power Point Tracking for In-Motion EV and PHEV Charging

Abstract

This paper evaluates the implementation of a DC-DC buck converter at the receiver side of an inductive power transfer (IPT) system, for in-motion electric vehicles (EVs) and plug-in hybrid electric vehicles (PHEVs) charging, controlled using a maximum power point tracking (MPPT) controller with fast response, as a method to maximize the transfer of energy. Such MPPT controller keeps the system working closest to the operating point where the energy transferred is at its maximum, regardless of varying positioning between transmitter and receiver over time, making a fast response and settling times crucial. To prove the viability of such system, a number of simulations were conducted, analyzing the controller response, and the impact on efficiency, transmitter and receiver power, and total energy transferred, adding knowledge to an area of literature evidently lacking.