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Small-Signal Analysis of Cascaded Systems 63
Figure 2.38 Nyquist plot of the minor loop gain for the cascade of VM_FB-controlled
buck converter and PICM_FB-controlled VSI (stable case).
Figure 2.39 Bus voltage and VSI three-phase output voltage transient in correspon-
dence of a symmetric VSI load step from 20Ω to 10Ω for the cascade of VM_FB-
controlled buck converter and PICM_FB-controlled VSI (stable case).
