The Non Linear Multivariable Controller for Terminal Voltage and Power Angle of Power Systems

Abstract

The proposed work is the design of a non linear voltage and rotor angle controller to improve the stability properties
of a system comprising a synchronous generator connected to an infinite bus and a hydraulic turbine. The controller
is based on the feedback linearization scheme. The advantage of this systematic non linear controller design is that
the control system is liberalized in a wider domain; a linear control can then be used to stabilize the linear system.
The performances of the linear voltage and rotor angle regulators are compared with those of the standard linear
voltage and speed regulators in the presence of short circuits at the generators and the infinite bus and the non linear
regulator, improved considerably the stability and the transient dynamic performance of the generator.We
investigate the applicatioon of a nonlinear controller to the multi-input multi-output model of a power system
consisting of a hydraulic turbine and a synchronous generator.