AC machine and transformer magnetic circuit model for iron loss calculation at converter feeding

A new model of magnetic circuit of AC machine is presented. The model is foreseen for iron loss calculation in condition of non-sinusoidal feeding of the machine especially from the voltage source inverter with PWM. There are the separate channels for saturation, hysteresis and eddy currents phenomena in the model. The structure of the model, parameter identification and its application to the loss calculation are shown. The elaborated model is valid also for transformer.