Plant number

Controller Type

Control index-parameters

Maximum overshoot (%)

Rise time (sec)

Settling time (sec)

Plant 1 CB open

PLL P-controller

27.3

0.252

1.457

PLL PI-controller

11.05

0.215

0.982

PLL SAPI-controller

2.05

0.162

0.213

Plant 1 CB close

PLL P-controller

25

0.231

1.41

PLL PI-controller

10

0.212

0.972

PLL SAPI-controller

1.98

0.159

0.208

Plant 2CB open

PLL P-controller

22.1

0.243

1.402

PLL PI-controller

9.56

0.187

0.971

PLL SAPI-controller

1.92

0.129

0.195

Plant 2CB close

PLL P-controller

21.11

0.241

1.398

PLL PI-controller

9.23

0.181

0.962

PLL SAPI-controller

1.89

0.127

0.194