Table 4: Initial and optimised PI controller gains for the power converters based on simplex optimum run.

Power converterCompensatorHand tuning aOptimized

G-VSC
(voltage mode)
PI110.0051.0150.0008713
PI20.210.21

G-VSC
(current mode)
PI320.0011.9570.0002511
PI40.60.0050.60.005
PI50.1200.120
PI650.0550.05

DC/DC
buck-boost
(BES)
PI7
(voltage-mode)
1.20.21.1470.2438
PI7
(current-mode)
1.20.21.2120.2026
PI810.510.5

Minimize WISE performance index with = 0.07, = 0.008, total number of runs = 200.