Transformer Magnetizing Inrush Currents Using a Directly Coupled Voltage-Source Inverter

Figure 10

Strategy 3, varying the number of cycles to full magnetization. The start angle 𝛼 is always set to 0^∘, but it will have little impact on the current peaks for the voltage ramping strategy.

(a) 𝛽=0^∘

(b) 𝛽=180^∘