Reliability Modelling and Misalignment Stability Optimization for Reliable Wireless Power Transfer System

ABSTRACT Recently, wireless power transfer (WPT) effectively meets the demands for distance, transfer power level, system efficiency and safety, making it highly promising for various applications. In practical applications, system performance is sensitive to the coil coupling, making reliability against coupling fluctuations a real challenge. This article focuses on the coil modelling for coils for wireless power transfer systems, of which the self‐inductance, mutual inductance, B field are all taken into consideration. Besides the accurate modelling, the coil optimization is conducted for better anti‐misalignment to achieve a robust stable performance. Finally, an experimental prototype is implemented, and the results validate the accuracy of the proposed model.