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
0.90
NI-R controller
0.20
0.40
1.00
0.70
Open-loop system
17.4
17.1
17.5
18.1