11-02-2011, 06:37 AM
Feedback linearization method for improvement of power systems transient stability
MINI PROJECT
ABSTRACT
Feedback linearization is a common approach used in controlling nonlinear systems. The approach involves coming up with a transformation of the nonlinear system into an equivalent linear system through a change of variables and a suitable control input. It is done by algebraically transforming non-linear system dynamics into a linear one so that linear control techniques can be applied. The canonical form and the general form of nonlinear systems are considered and linearization methods for these systems are presented.
This project investigates the application of a multi-variable nonlinear controller to the model of a power system. The proposed controller is based on the feedback linearization concept and its main goal is improvement of transient stability and voltage regulation at post-fault conditions. It will be shown that the controller enhances first swing stability and system damping under large disturbances as well as improves terminal voltage regulation.
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