Table 3.

Key indicators of dynamic response under $T_y$ changes.

Controller	Value of Parameter$T_y$	Settling time (s)	Undershoot (p.u.)
PID controller	0.2	>10	$-2.43\times {10}^{-3}$
	0.4	>10	$-3.07\times {10}^{-3}$
	0.6	>10	$-3.67\times {10}^{-3}$
	0.8	>10	$-4.19\times {10}^{-3}$
$H_2$Controller	0.2	5.925	$-2.04\times {10}^{-3}$
	0.4	6.266	$-1.64\times {10}^{-3}$
	0.6	4.607	$-1.58\times {10}^{-3}$
	0.8	4.904	$-1.63\times {10}^{-3}$
$H_{\infty }$Controller	0.2	4.511	$-1.64\times {10}^{-3}$
	0.4	5.625	$-2.08\times {10}^{-3}$
	0.6	7.503	$-2.47\times {10}^{-3}$
	0.8	>10	$-2.78\times {10}^{-3}$
Proposed controller	0.2	0.491	$-1.29\times {10}^{-4}$
	0.4	0.527	$-1.66\times {10}^{-4}$
	0.6	0.366	$-2.01\times {10}^{-4}$
	0.8	0.311	$-2.35\times {10}^{-4}$