Page 101 - Modern Control of DC-Based Power Systems
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Small-Signal Analysis of Cascaded Systems 65
Figure 2.42 Nyquist plot of the minor loop gain for the cascade of VM_FB-controlled
buck converter and PICM_FB-controlled VSI (unstable case).
Figure 2.43 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 (unstable case).