Representation of magnetic hysteresis phenomena under inverter excitation in a circuit simulator using coupling analysis of electricity and magnetism

We focus on accurate representations of hysteretic phenomena under pulse width modulation (PWM) inverter excitation using strong-coupling analysis of the magnetic field and the electric circuit. We perform the strong-coupling analysis by applying a dynamic hysteresis model (play model with the Cauer circuit) to a circuit simulator. We show that, by accounting for dead time properties, the numerical voltage waveforms obtained in our study are consistent with those obtained experimentally. Further, the accurate representations of the voltage waveform and of the high and wide band frequency indicate that the hysteresis curves simulated by our proposed strong-coupling analysis agree well with the measured results. © 2019, Magnetics Society of Japan. All rights reserved.