Super-twisting algorithm, a second-order sliding mode control method, is studied for hydropower plant frequency control. Two versions of this algorithm are introduced in this paper. Simulation results from both of these second-order methods and regular sliding mode control are compared on the basis of system responses and control efforts. It is shown that the second-order sliding mode controller is able to reduce chattering effects associated with the regular sliding mode control and preserve the robustness of the regular sliding mode control as well.

Issue Section:
Technical Brief
Keywords:
Nonlinear systems, Uncertain systems , Control, Robust control
Topics:
Control equipment, Hydroelectric power stations, Sliding mode control, Robustness, Algorithms, Simulation results, Stress

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