Vehicle Steering Control with Lateral and Angular Misalignment Estimation Based on Receiver Current in Dynamic Wireless Power Transfer

This paper proposes a receiver-side DC current-based method for vehicle lateral and angular misalignment estimation in dynamic wireless power transfer (DWPT) systems. The proposed method uses a current-map that formulates the relationship between lateral misalignment and DC current on the receiver side. In addition, this paper focuses on angular misalignment estimation. This is accomplished by the derivation of geometric relationships from two or more estimated values of lateral misalignment on each transmitter coil. From the simulation and experiment, the proposed method was confirmed to be effective when angular misalignment of the vehicle body occurs, such as when changing lanes.