Iron Losses Calculation in Non-Harmonic Power Supply

The non-harmonic input voltage waveform becomes more frequent with the increasing interest in the multiphase machines; the injecting of higher harmonics is used to the decrease of the saturation of the machine. The non-harmonic flux linkage waveform affects the total iron losses. Presented paper deals with the usage of the modified Steinmetz equation (MSE) used to the calculation of the iron losses. The analytical-numerical tool including the nonlinearity of the magnetic circuit and the dynamic BH curve is presented. Different configurations of input voltage and magnetic material properties are analyzed and the results are compared with the analytical calculation and finite element analysis.