Abstract
An application of state-space adaptive control to a turbo-generator set is considered in this paper. The turbo-generator, consisting of a turbine and a synchronous generator, is a typical electromechanical system, which exhibits highly nonlinear behaviour and non-negligible couplings between electrical and mechanical control loops. Especially if the plant is not connected to the rigid 50 Hz grid, the control task for varying load in different operating points is quite difficult. The parameters of the plant are identified directly in its state-space form using the prediction error method, which estimates also simultaneously the system states. Both pole-placement and optimal control approaches are commissioned for designing the state controller. The complete control algorithm has been implemented as interactive real-time program on a Personal Computer. Experiments of real-time control for voltage and frequency of the turbo-generator set show good performance for set point and operating point changes.
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