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

Figure 6

Strategy 1, varying the firing angle 𝛼 for different stop angles 𝛽.

(a) 𝛽=0^∘

(b) 𝛽=90^∘

(c) 𝛽=180^∘

(d) 𝛽=270^∘