Inderscience Publishers

Optimal control of matrix converter based WECS for performance and stability enhancement at low wind speeds

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In this paper, optimal control of new wind energy conversion scheme where four-leg improved matrix converter (MC) is used for performance and stability enhancement, particularly for sites where most of the time low wind speeds prevails, has been explained. The power factor at the interface with the grid is controlled by the MC to ensure purely active power injection into the grid for optimal utilisation of the installed wind turbine capacity. The generation system has fuzzy logic control with vector control in the inner loops. Fuzzy controller tracks the angular frequency with the wind velocity to extract the maximum power and programs the machine flux for performance, stability and efficiency enhancement during light load and low speeds. The complete control system has been developed and analysed using MATLAB/Simulink.

Keywords: four-leg matrix converter, adaptive fuzzy logic controller, wind power generation, wind energy, fuzzy control, adaptive control, wind turbine capacity

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