Variable speed control of wind turbines based on the optimal discrete sliding mode control

The aim of this paper is to propose a new design variable speed wind turbine control based on Discrete-Time Sliding Mode Control (DT-SMC). Firstly, the plant model of the system is built as a linear model. To overcome the chattering problem, a second order sliding mode controller is proposed. A novel method for the design of the sliding surface based on the resolution of a Sylvester equation is designed and the stability is proved. Simulation results have been presented to illustrate and confirm the usefulness and the effectiveness of the proposed control strategy.

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