High-Precision Calculation of Iron Loss by Considering Stress Distribution of Magnetic Core

SMC Development Guidelines for Axial Flux PM Machines Employing Coreless Rotor Structure for Enhancing Efficiency Based on Experimental Results

“…In the previous section, 3D-FEA analysis was performed of an AFM employing virtual SMCs, and the variations in torque, copper loss, and magnetic flux density were discussed. The iron loss of actual machine in experiments is generally higher owing to the switching ripple caused by the inverter [16], [17] and construction factors such as residual stress [24]. Accordingly, it is not desirable to construct SMC development guidelines based on 3D-FEA results alone.…”

Local Heat Generation Analysis Method of Ferrite Cores for Wireless Power Transfer Coil Considering Compressive Stress

“…Therefore, it is important to accurately predict the heat generation characteristics of the ferrite core by considering the compressive stress at the design stage. In previous studies, the characteristics of compressive stress have been studied in the iron loss analysis of electrical steel sheets used for motors [6]- [9]; they have also been applied to the iron loss analysis [10] [11]. In addition, the characteristics of compressive stress has been studied in the iron loss of ferrite cores has also been conducted [12].…”

Study of Computation Method of Iron Loss Considering Magnetic Anisotropy by Processing Residual Stress

“…However, these methods use modeling based on Steinmetz's equation that assumes sinusoidal magnetic flux, and iron loss caused by harmonic flux that becomes pronounced at high motor's rotation speed could not be accurately calculated. There were also studies dealing with residual stress and direction of magnetization, but they were not sufficiently substantiated [1], or required enormous measured data of magnetic properties in different directions of stress [2,3].…”