Comprehensive Performance Analysis of Three-Phase Four-Wire AC Filter from EV On-Board Charger through Measurement and 3D Simulation Techniques

In this paper, we introduce an innovative methodology that combines advanced measurement techniques with 3D simulation to analyze the performance of a three-phase four-wire AC input filter from EV on-board charger (OBC). This approach not only provides a deeper understanding of filter effectiveness but also enables to identify key parameters influencing the filter's behavior in real-world applications and to propose design changes for its improvement. The performance of AC filter is evaluated for both single-phase and three-phase operation through an analysis of the common-mode (Scc21) and differential-mode (Sdd21) S-parameters. The impact of the OBC housing on filter effectiveness is thoroughly investigated and discussed.