New Mathematical Approach for Eddy Current Loss in Air-Gap-Windings in a PMSM

In this paper, a new mathematical approach for calculation of Eddy Current Losses in Air-Gap-Windings is introduced. Based on magnetic field simulations in ANSYS Maxwell of the PMSM, developed at Otto-von-Guericke-University Magdeburg, the magnetic flux through the winding is estimated. The calculation of the losses is realized by using differential small conductor loops representing the flow of the eddy current inside the copper windings. The approach is validated and compared with measured eddy current loss from two different PMSM with Air-Gap-Winding.