Robust Stabilization of AVR Loop through Extended Reduced-Order Observer
Rittu Angu1, R. K. Mehta2

1Rittu Angu, M-Tech in Power System Engineering in 2013 from NERIST (Deemed University), Nirjuli Itanagar, India.
2R. K. Mehta,
Manuscript received on December 20, 2014. | Revised Manuscript received on December 22, 2014. | Manuscript published on December 25, 2014. | PP:6-11 | Volume-3, Issue-2, December 2014. | Retrieval Number: B0869123214

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Abstract: An Extended Reduced Order Observer (EROO) based design approach has been presented for an Automatic Voltage Regulation (AVR) loop of the synchronous generator. The design approach utilizes the full state feedback to stabilize the AVR loop in the face of parameter uncertainty. The EROO-based design approach is capable of robust trajectory tracking in presence of parameter uncertainty and disturbances due to load demand changes. The design ensures specified stability margins at different speeds of response. An illustrative example has been provided to demonstrate the effectiveness of the methodology.
Keywords: Automatic voltage regulator, Control area, extended reduced-order state observer, augmented system, MATLAB simulation.