Classical vector, first-order sliding-mode and high-order sliding-mode control for a grid-connected variable-speed wind energy conversion system: A comparative study

Classical vector, first-order sliding-mode and high-order sliding-mode control for a grid-connected variable-speed wind energy conversion system: A comparative study

Youssef Krim, Dhaker AbbesSaber Krim,  Mohamed Faouzi Mimouni

Wind Engineering, SAGE Journal

https://doi.org/10.1177/0309524X17723202

RÉSUMÉ / ABSTRACT :

This article proposes a comparative study between different control strategies of a wind energy conversion system. It aims to guarantee a robust control strategy which gives a good performance despite the external disturbances. Studied system comprises a wind turbine, a permanent magnet synchronous generator, and two converters linked by a DC bus. The whole is connected to the grid through a resistor–inductor filter. A classical vector control based on proportional–integral controller is applied to our system. Owing to the sensitivity of this control against external disturbances, a control strategy using first-order sliding mode has been proposed. This strategy provides good performance, such as insensitivity to non-linearity of system. Yet, the theory of first sliding mode has faced the problem of chattering, which proved to be a major drawback. To overcome this problem, a control strategy using sliding mode of higher order was implemented on the basis of the super-twisting algorithm.

MOTS CLES / KEYWORDS :  Permanent Magnet Synchronous Generator (PMSG), First-Order Sliding Mode (FOSM), Second-Order Sliding Mode (SOSM), Wind Energy Conversion System (WECS), Super Twisting.

 




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