Enhancing Misalignment Tolerance and CC/CV Output in Hybrid Power Transfer Systems via Generalized Parity‐Time Symmetry

ABSTRACT Enhancing the power density of coupling mechanisms has been the dominant research focus in hybrid power transfer (HPT) systems in recent years. However, investigations into improving system‐level robustness and misalignment tolerance remain relatively limited. Moreover, conventional parity‐time (PT) symmetric systems impose an inherent requirement of strict topological symmetry, which further restricts their practical application. To address these challenges, this paper proposes an S‐LCC‐compensated HPT system based on generalized parity‐time (GPT) symmetry. By modeling the S‐LCC topology as an equivalent series–series (S‐S) circuit, we reformulate the problem of determining the critical coupling coefficient into the derivation of a critical coupling resistance, facilitating systematic parameter design. Furthermore, the describing function method (DFM) is employed to evaluate system stability. Finally, an experimental prototype rated at 24 V/2 A is constructed to validate the proposed system. Experimental results demonstrate that the system maintains robust constant current (CC) and constant voltage (CV) outputs even when the inductive and capacitive coupling mechanisms are laterally misaligned by up to 40% of the coil diameter and 20% of the plate side length, respectively, confirming its excellent robustness against coupling coefficient perturbations.