Table 1 Nominal values and proposed uncertainty of AVR components.

From: Performance and robustness analysis of V-Tiger PID controller for automatic voltage regulator

Component

Nominal values

Proposed uncertainty

Gain constant

Time constant

Gain constant

Time constant

AC generator

1.0

1.0

No uncertainty

Field exciter

1.0

0.4

50%

50%

Voltage feedback

1.0

0.01

No uncertainty

Amplifier

10.0

0.1

50%

50%