Optimal Adaptive Gain LQR-Based Energy Management Strategy for Battery–Supercapacitor Hybrid Power System

Seydali Ferahtia, Ali Djeroui, Tedjani Mesbahi, Azeddine Houari, Samir Zeghlache, Hegazy Rezk and Théophile Paul
Additional contact information
Seydali Ferahtia: Laboratoire d’Analyse des Signaux et Systémes, Department of Electrical Engineering, University of M’sila, M’sila 28000, Algeria
Ali Djeroui: Electrical Engineering Laboratory, Department of Electrical Engineering, University of M’sila, M’sila 28000, Algeria
Tedjani Mesbahi: ICube CNRS (UMR 7357) INSA Strasbourg, University of Strasbourg, 67000 Strasbourg, France
Azeddine Houari: IREENA Laboratory, University of Nantes, 44602 Saint-Nazaire, France
Samir Zeghlache: Laboratoire d’Analyse des Signaux et Systémes, Department of Electrical Engineering, University of M’sila, M’sila 28000, Algeria
Hegazy Rezk: College of Engineering at Wadi Addawaser, Prince Sattam BinAbdulaziz University, Al-Kharj 11991, Saudi Arabia
Théophile Paul: ICube CNRS (UMR 7357) INSA Strasbourg, University of Strasbourg, 67000 Strasbourg, France

Energies, 2021, vol. 14, issue 6, 1-16

Abstract: This paper aims at presenting an energy management strategy (EMS) based upon optimal control theory for a battery–supercapacitor hybrid power system. The hybrid power system consists of a lithium-ion battery and a supercapacitor with associated bidirectional DC/DC converters. The proposed EMS aims at computing adaptive gains using the salp swarm algorithm and load following control technique to assign the power reference for both the supercapacitor and the battery while achieving optimal performance and stable voltage. The DC/DC converter model is derived utilizing the first-principles method and computes the required gains to achieve the desired power. The fact that the developed algorithm takes disturbances into account increases the power elements’ life expectancies and supplies the power system with the required power.

Keywords: battery; supercapacitor; hybrid power system; optimal control; DC/DC converter; energy management strategy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (7)

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