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Table 8 RMS voltage error for different loads of SISO system

From: Improved voltage tracking of autonomous microgrid technology using a combined resonant controller with lead-lag compensator adopting negative imaginary theorem

Controller name

Consumer load

Harmonic load

Unknown load

Nonlinear load

Dynamic load

NI-RLLC controller

0.10

0.30

0.10

0.90

0.10

NI-R controller

0.20

0.40

0.30

1.00

0.70

Open-loop system

17.4

17.1

17.5

18.1

17.4