Stable dynamic wireless power transfer via a space-extendable high-order Non-Hermitian system

Abstract

A prominent problem in wireless power transmission systems is the sensitivity of the mode frequency to changes in position. While a feedback system can address this issue, it also introduces complexity to the system, potentially giving rise to additional problems. Typically, more complex systems exhibit unique properties, and there are modes suitable for power transfer in high-order PT systems.In this paper, we propose a dynamic wireless power transmission system with hybrid coupling, utilizing odd coils only. This approach offers a feasible solution for dynamic wireless power transmission systems. We calculate the eigenvalues of the system and observe that the eigenvalue of a mode does not change as the load moves, remaining a pure real number. In our study, the system’s transmission efficiency can be maintained at a high and stable level at a fixed working frequency, even as the load position changes. This capability can be employed for stable dynamic charging.