Rapid EMC simulation technique for multi-component power electronic systems
摘要
For swift and robust electromagnetic compatibility analysis of power electronic systems, we propose a novel complex spectral excitation approach. The Two-Step Spectral Excitation Technique method alleviates the convergence problems and lengthy simulation times inherent to traditional transient simulations. In the first step, equivalent spectral sources are derived from the functional power electronics (PE) system’s steady-state transient behavior. In the second step, these sources excite frequency-domain simulations that efficiently incorporate parasitic elements for comprehensive electromagnetic compatibility (EMC) studies. The method enables EMC analysis for fixed operating conditions, allowing rapid evaluation of modifications such as parasitic effects and filter designs that do not alter the fundamental switching behavior. The method’s effectiveness is demonstrated through two industrial case studies, enabling rapid filter design, sensitivity analysis, and root-cause investigation of electromagnetic interference (EMI) phenomena.