Table 2 Best gain values obtained by a SSO strategy.

From: SSO optimized FOFPID regulator design for performance enhancement of doubly fed induction generator based wind turbine system

Controller gains

Kp

Kd

Ki

Ku

µ

PI

0.568

0

4.60

–

–

FO Fuzzy PDI

0.549

0.21

10.66

10.67

0.26

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