This article gives a review of a part of measuring results obtained during factory tests and inspections of a wind mil power unit. Magnetic fields were measured by two different measuring methods and the results were compared consecutively. The article also gives the results of calculation of dynamic electromagnetic field by application of FEM to the model of a synchronous generator installed in the wind mill power unit. Those results were compared to the measuring results as well.
In the process of designing of rotational machines nowadays, designers increasingly use powerful tools that enable calculations of electromagnetic fields in particular machine constructions through application of FEM. The exactness of obtained results depends on the applied model and the defined initial and marginal conditions for a particular facility that has been analysed. In order to determine the exactness of the calculation, as well as the scope of varying of input parameters within which the calculation is sufficiently correct, it is necessary to perform measuring and to compare resulting data