Iron Loss Calculation Based on Loss Surface Hysteresis Model and Its Verification

Over the years, iron loss evaluation is still a tough issue. A lot of iron loss models have been developed, and most of them are based on the loss separation model. Another alternative is to calculate the iron loss from the hysteresis loop. One benefit of hysteresis models is that the iron loss can be directly obtained if the B-H hysteresis loops are known. This paper introduces an iron loss estimation method based on the loss surface (LS) hysteresis model and finite element analysis. The proposed method has been applied for iron loss evaluation on different topology specimens. Different excitations with harmonics are investigated. The calculated iron loss is compared with the measured one, which verified the modeling accuracy of the proposed method. The developed LS hysteresis model is applied to calculate the iron loss of an interior permanent magnet synchronous motor. From the evaluation of results, it is shown that the proposed iron loss method can be applied in electromagnetic mechanisms.