Hysteresis modeling in the MATLAB/Power System Blockset

This paper presents a static hysteresis model for the saturable transformer blocks in the Power System Blockset (PSB), a MATLAB/Simulink®-based simulation tool. This model will be available in version 3.0 of the PSB (also called SimPowerSystems) and offered as an alternative to the actual core saturation characteristic. The effect of hysteresis and eddy losses are of significance in the studies of: sub harmonic; residual flux effects on the transformer inrush currents; ferroresonance phenomena; harmonics generated by half-cycle saturation.