Abstract
The magnetic integration method of single-stage and multi-stage electromagnetic interference (EMI) filter was proposed with EE and EIE-type cores for single-phase grid-connected voltage-source inverter (VSI). Common mode (CM) and differential mode (DM) chokes were all integrated into a single magnetic core unit. The effectiveness of integrated single-stage EMI filter (ISSEF) and multi-stage EMI filter (IMSEF) has been verified by simulation and experiments. Taking a 500 W single-phase inverter as an experiment platform, the conducted EMI noise and core temperature distribution were presented. The EMI filter with integrated structure can significantly reduce system volume with satisfied EMI suppression ability.
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