In iron loss analysis, conventionally, methods using previously measured iron loss data have been mainly used (hereinafter referred to as conventional methods). However, since the range of application of conventional methods is limited to the actual measurement conditions, there were issues when evaluating the influence of harmonic waves or direct current superposition. New models such as the play model and the 1D method were applied to iron loss analysis (hereinafter referred to as new methods). Hysteresis loss was improved by the play model and the accuracy of classical eddy current loss calculations were improved by the 1D method.
Among iron loss components, there is anomalous eddy current loss in addition to hysteresis loss and classical eddy current loss. Along with the improvement of the accuracy of hysteresis loss and classical eddy current loss mentioned above, the improvement in the accuracy of anomalous eddy current loss has become a subject. In this paper, the improvements in the accuracy of anomalous eddy current loss calculations are described.