Romanian Journal of Information Science and Technology (ROMJIST)

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ROMJIST is a publication of Romanian Academy,
Section for Information Science and Technology

Editor – in – Chief:
Academician Dan Dascalu

Secretariate (office):
Adriana Neagu
Adress for correspondence: romjist@nano-link.net (after 1st of January, 2019)

Editing of the printed version: Mihaela Marian (Publishing House of the Romanian Academy, Bucharest)

Editing of the on-line version: Lucian Milea (University POLITEHNICA of Bucharest)

Sponsors:
• National Institute for R & D
in Microtechnologies
(IMT Bucharest), www.imt.ro
• Association for Generic
and Industrial Technologies (ASTEGI), www.astegi.ro

ROMJIST Volume 21, No. 4, 2018, pp. 429-445, Paper no. 611/2018
 

S. LABDAI, N. BOUNAR, A. BOULKROUNE, B. HEMICI
Sliding Mode Control via Fuzzy Multi-Level Switching control scheme for DFIG based WECS

ABSTRACT: This paper presents a new sliding mode control (SMC) via fuzzy multi-level switching (FMLS) technique for doubly fed induction generator-based wind energy conversion system (DFIG-based WECS). The main objectives are: 1) extraction of maximum power from the wind by achieving maximal power point tracking (MPPT) strategy, and 2) supplying the grid with zero reactive power. The SMC is combined with FMLS control to minimize the undesirable effect of chattering inherent to the conventional SMC. Based on the measured error, five error levels are selected extra-small, small, middle, large, and extra-large. For each error level there is different switching level. The DFIG and MLS controller will be tested against various perturbations. Simulation results using Simulink/Matlab conclude that the proposed controller succeeded in eliminating perturbation and minimizing the chattering effect.

KEYWORDS: Wind energy conversion system, MPPT, DFIG, Sliding mode control, Fuzzy control, Multi-level switching

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