We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Observer-based tracking control for single machine infinite bus system via flatness theory.
- Authors
Aghababa, Mohammad Pourmahmood; Marinescu, Bogdan; Xavier, Flo rent
- Abstract
In this research, we aim to use the ftatness control theory to develop a useful control scheme for a single machine connected to an infinite bus (SMIB) system taking into account input magnitude and rate saturation constraints. We adopt a fourth-order nonlinear SMIB model along an exciter and a turbine governor as actuators. According to the ftatness-based control strategy, first we show that the adopted nominal SMIB model is a Hat system. Then, we develop a full linearizing state feedback as well as an outer integral-type loop to ensure suitable tracking performances for the power and voltage as well as the angular velocity outputs. We assume that only the angular velocity of the generator is available to be measured. So, we provide a linear Luenberger observer to estimate the remaining states of the system. Also, the saturation nonlinearities are transferred to the linear part of the system and they are canceled out using their estimations. The efficiency and usefulness of the proposed observer-controller against fau lts are illustrated using simulation tests in Eurostag and Matlab. The results show that the clearing critical time of the introduced methodology is larger than the classical control approaches and the proposed observer-based ftatness controller exhibits over much less control energy compared to the classic IEEE controllers.
- Subjects
STATE feedback (Feedback control systems); ANGULAR velocity; LINEAR systems; BUSES; TRACKING control systems; ACTUATORS
- Publication
International Journal of Electrical & Computer Engineering (2088-8708), 2021, Vol 11, Issue 2, p1186
- ISSN
2088-8708
- Publication type
Article
- DOI
10.11591/ijece.v11i2.pp1186-1199