Application of a multivariable feedback linearization scheme for rotor angle stability and voltage regulation of power systems

This paper investigates the application of a nonlinear controller to the mu lti-input multi-output model of a system consisting of a. hydraulic turbine and a. synchronous generator. The controller proposed is based on a feedba ck linearization scheme. Its main goal is to control the rotor angle as wel l as the terminal voltage, to improve the system's stability and damping pr operties under large disturbances and to obtain good post-fault voltage reg ulation, The response of the system is simulated in the presence of a short -circuit at the terminal of the machine in two different configurations and compared to the performance of a standard IEEE type 1 voltage regulator, P SS and a PID speed regulator.