Research on Dual Topology Compensation Network for Electric Vehicles Based on Anti-Islanding Characteristics
This article studies a dual-topology wireless power transfer system for electric vehicles with anti-offset characteristics to address the issue of output current variation caused by coupling misalignment in wireless power transfer systems.Firstly,a comparison of transmission characteristics under typical compensation topology misalignment conditions was conducted for the S-S,LCC-S,and LCC-LCC topologies,analyzing the changes in power and efficiency.The results show that the S-S topology has significant power changes under misalignment conditions,while the LCC-S and LCC-LCC exhibit relatively stable Power Variation Factor(PVF)values within a certain misalignment range.The S-S topology achieves the highest transmission efficiency at zero misalignment,but efficiency sharply decreases as misalignment increases.The LCC-S and LCC-LCC exhibit high efficiency under small misalignment conditions,but their transmission efficiency is significantly affected in the case of detuning.Overall,although the transmission efficiency of the LCC-LCC topology is lower,it exhibits less fluctuation under misalignment conditions,making it suitable for dynamic wireless charging scenarios.
anti-offsetelectric vehicleswireless power transmissioncompensation networkLCC-LCC topology structure
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