A real-time predictive controller for automatic voltage regulation of a synchronous generator

Abstract

The use of a predictive controller in automatic voltage regulation (AVR) of a synchronous generator is proposed for real-time control purposes. The controller consists of a fast-time linearized 2nd-order model of an alternator and control logic. The fast-time model is used to predict the time response of the controlled system (generator voltage output), and the control logic is responsible for choosing the necessary input to the controlled system. The principles of time-optimal control and linear regulator are used in controller design. The effectiveness of such a controller is examined by digital simulation study for the response of a synchronous machine, connected to an infinite bus under various input and initial conditions. The effects on the stability of the overall system are analysed.