Simulation Study on Radiation Emission of Power Conversion System

In this paper, the radiation emission (RE) simulation and prediction model are established for the analysis of the electromagnetic interference (EMI) generated by the inverter module in a power conversion system (PCS). Firstly, according to the principle of electromagnetic compatibility (EMC), the mechanism of the RE in the PCS is analyzed. Secondly, the three-dimensional equivalent model of the PCS is built in HFSS software, and the ports are set and analyzed according to the actual working conditions. Using the field-circuit coupling simulation technology to obtain the actual excitation of each port, which can realize the simulated prediction of the radiated signals. Lastly, compared with the simulation results and measured results, it shows that the two results change synchronously and verify the effectiveness of the method.