Title: Power control of a stand-alone electric generation hybrid system using integral sliding mode controller

Authors: Fatima Ez-zahra Lamzouri; El-Mahjoub Boufounas; Aumeur El Amrani

Addresses: REIPT Laboratory, Faculty of Sciences and Technology, Moulay Ismail University of Meknes, BP 509, Boutalamine 52000, Errachidia, Morocco ' REIPT Laboratory, Faculty of Sciences and Technology, Moulay Ismail University of Meknes, BP 509, Boutalamine 52000, Errachidia, Morocco ' REIPT Laboratory, Faculty of Sciences and Technology, Moulay Ismail University of Meknes, BP 509, Boutalamine 52000, Errachidia, Morocco

Abstract: This paper proposes a novel strategy for output power control of an electric generation hybrid system (EGHS), composed of a photovoltaic generation system, a storage battery bank and a variable load. According to different atmospheric conditions and load changes, a robust control based on sliding mode control (SMC) is designed to satisfy the total power demand in different power system operation modes. Thus, the proposed controller is modified by introducing the integral action in the switching surface, in order to improve transient response with minimum steady state error. Numerical simulations are presented and discussed to demonstrate the performance of the proposed method, using a nonlinear model of the plant. Finally, the simulation results show that the proposed integral sliding mode control (ISMC) strategy ensures better response speed and smaller steady-state error compared to standard SMC.

Keywords: hybrid power generation system; maximum power point tracking; MPPT; power control; integral sliding mode control; ISMC.

DOI: 10.1504/IJAAC.2022.122607

International Journal of Automation and Control, 2022 Vol.16 No.3/4, pp.388 - 409

Received: 05 Aug 2020
Accepted: 09 Nov 2020
Published online: 04 May 2022 *

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