In recent years, the use of square wire coils has been on the rise to produce higher output in rotating machines. For this reason, in analysis, there has been an increase in modeling wire geometries for the calculation of eddy currents and AC losses in the wire. In order to calculate AC losses in the wire, it is necessary to accurately capture interlinking flux as well as the skin effect and proximity effect produced by it. In mesh division, a sufficient resolution is sought to capture these phenomena. However, if the resolution is increased too much, the scale of the model becomes excessively large. This leads to an increase in calculation cost, so it becomes necessary to set an appropriate resolution.
In this report, coil AC loss analysis is examined from the perspective of mesh modeling.