Simulating Electromagnetic Interactions in High Power Density Inverters

In high power density inverters with integrated functions like filters and control electronics electromagnetic interaction between components becomes an important issue. Especially filters for electromagnetic interference are very sensitive to electromagnetic fields and therefore critical to design. Nevertheless only few guidelines for optimizing placement of filter components were published up to now. This paper introduces a simulation method for predicting stray fields of components and conducting structures, which is verified experimentally for different passive components and setups. The examples demonstrate a possibility of handling interaction problems