Transformer Magnetizing Inrush Currents Using a Directly Coupled Voltage-Source Inverter
Figure 2
Three different typical paths in the B-H plane. is assumed to be maximum for all cases. In strategy 1, the core is directly pushed into saturation and it can take a long time before it stabilizes. In strategy 2, is pulled down to zero for all phases, which reduces the magnitude of the inrush current. In strategy 3, the voltage ramping will slowly converge to the stable B-H-path while avoiding large inrush currents.
