ABSTRACT The hybrid inductive and capacitive wireless power transfer (HWPT) system is confronted with the dual challenges of the eddy current effect brought by the integration of the hybrid coupler and the output fluctuation caused by the misalignment of the coupler. Therefore, this paper proposes a novel HWPT system design featuring a fishbone‐shaped capacitive coupler and presents an optimisation strategy. The proposed structure effectively suppresses eddy currents by limiting their circulation paths while enabling independent design of the capacitive and inductive couplers, thus ensuring the system's power transmission capability. Then, based on the proposed efficiency model of the hybrid coupler, this paper analyses the factors affecting the efficiency of the hybrid coupler and gives the conditions for achieving efficiency optimisation of the system in combination with the double‐sided LCLC compensation network. Finally, with the goal of minimising the fluctuations in the system output current and efficiency during misalignment, the system parameters are optimised using the particle swarm algorithm. The experimental results demonstrate that the system achieves 3.3 kW power transfer at a 100 mm airgap with 87.6% peak efficiency, confirming effective eddy current suppression. Under 30% horizontal misalignment and 0°–45° rotational misalignment, the output current fluctuation remains below 10%, while the efficiency variation is maintained within 3%.
Xiang et al. (Thu,) studied this question.