| Large synchronous machines produce the majority of electric energy in Canada. To improve quality of the electric energy, manufacturers skew stators of these machines, Skewing causes axial shifting of magnetic fields, so that power losses in these machines differ from the losses in unskewed machines Numerical methods are incapable of analyzing a large skewed machine in a reasonable time. To evaluate losses, fast simulation tools have been needed to aid designers of skewed synchronous generators at a preliminary stage of design.;This work is devoted to analytical modeling of harmonic magnetic fields, harmonic currents and high-frequency energy losses in large synchronous generators with skewed stators. A fast and accurate simulation tool has been developed on the basis of the model; it can be used for preliminary design of a skewed synchronous machine. |
