Decentralized Hybrid Fuzzy-Sliding Mode Control of Multi-machine Power System

Seddik BENHADOUGA, Abdelhakim BELKAID, ilhami COLAK, Djamel BOUKHETALA, Farès BOUDJEMA, Mounir MEDDAD, Riad KHENFER, Adil Eddiaid

Abstract


The robustness about parameter variations and external disturbances are the first property of  sliding mode control system,  the second is chattering  phenomenon caused by non-ideal switching action, and it’s the main inconvenient of this control theory. The aim of this paper is to develop a decentralized fuzzy-sliding mode controller (DFSMC) with a nonlinear sliding surface for non linear multi-machine power system. The combining fuzzy logic controller and sliding mode controller is used to exploit the advantage and eliminate the inconvenient characteristics of sliding mode control. The main purpose is to eliminate the chattering phenomenon and to overcome the problem of the equivalent control computation. The feedback linearization approach is used at first order to handle the nonlinearities of power systems model and decentralize the excitation controller.  A local Fuzzy Sliding Mode Stabilizer is designed to stabilize the speed angle of each generation unit in the global system under high level external disturbances. This method is illustrated with a three synchronous generators power system. Simulations show that the proposed decentralized fuzzy-sliding mode controller provides high-performance dynamic characteristics and is robust with regard to eternal disturbance.

Keywords


Power system stability, feedback linearization approach, sliding mode control, decentralized control, fuzzy sliding mode stabilizer

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References


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DOI (PDF): https://doi.org/10.20508/ijrer.v12i2.13093.g8471

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