SYSTEM AND METHODS FOR DETECTION OF MISALIGNMENT IN A WIRELESS POWER TRANSFER

Abstract

A method of correcting misalignment between two or more transmitter coils embedded in a roadway and two or more receiver coils in a vehicle includes measuring current or voltage in two or more receiver coils when energized by two or more transmitter coils based on electromagnetic coupling between the two or more transmitter coils and the two or more receiver coils, sampling the measured current or voltage, determining magnitude and phase of the sampled current or voltage, using symmetrical component analysis to determine positive and negative sequence components, determining the two or more receiver coils misalignment with respect to the two or more transmitter coils based on the determined positive and negative sequence components, and providing position correction signals or instructions for the two or more receiver coils based on the determined misalignment.

CPC Classifications