Optimizing Wireless Power Transfer for EVs Using Co-Simulation of Ansys Maxwell and MATLAB Simulink

This paper employs a co-simulation approach using Ansys Maxwell and MATLAB Simulink to investigate the performance of a Wireless Power Transfer (WPT) system for Electric Vehicles (EVs). The study aims to optimize Power Transfer Efficiency (PTE) according to SAE J2954 standards, which require >85% PTE for aligned coils and >80% for misaligned coils, addressing challenges commonly encountered in public EV charging stations (SPKLU). Ansys Maxwell analyzes magnetic field distribution and coupling coefficient variations, while MATLAB Simulink evaluates circuit-level performance under various alignment conditions. Results demonstrate that optimal alignment achieves 97.50% PTE, and moderate misalignments (e.g., k = 0.4 to 0.55) maintain efficiency above 80%, meeting the standard. This research highlights how co-simulation offers practical insights into addressing real-world challenges in public charging infrastructure, improving the reliability and efficiency of WPT systems.