This thesis presents the process of setting up models and analysis, on the example of brushless direct current motor with printed circuit board, using Ansys Electronics Desktop® software pack, with the accent on using Ansys HFSS® solver. The process is built for simulation of conducted emissions based on CISPR 25 EMC standard. The process is to be used during the design stages of the product to decrease the number of prototypes necessary for EMC testing. Besides that, it can be used as a helping tool for reducing high value electromagnetic conducted emissions of the product.
To achieve the desired goal, the 3D model of the sample is prepared in the HFSS® solver, which calculates the S-parameter matrix, using the finite element method, which is then imported to Ansys Circuit workplace, where it is connected to the other parts of the circuit. The models for driver and transistors are also prepared imported and connected to the circuit. The transient analysis of the prepared circuit is run using Ansys NEXXIM® solver, and the results are then exported and processed through EMI receiver model, running on Scilab software, and compared to the results of measurements.
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