Real-Time Management for an EV Hybrid Storage System Based on Fuzzy Control

Dimitrios Rimpas (), Stavrοs D. Kaminaris, Dimitrios D. Piromalis and George Vokas
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Dimitrios Rimpas: Department of Electrical & Electronics Engineering, University of West Attica, 250 Thivon Av., 122-44 Egaleo, Greece
Stavrοs D. Kaminaris: Department of Electrical & Electronics Engineering, University of West Attica, 250 Thivon Av., 122-44 Egaleo, Greece
Dimitrios D. Piromalis: Department of Electrical & Electronics Engineering, University of West Attica, 250 Thivon Av., 122-44 Egaleo, Greece
George Vokas: Department of Electrical & Electronics Engineering, University of West Attica, 250 Thivon Av., 122-44 Egaleo, Greece

Mathematics, 2023, vol. 11, issue 21, 1-18

Abstract: Following the European Climate Law of 2021 and the climate neutrality goal for zero-emission transportation by 2050, electric vehicles continue to gain market share, reaching 2.5 million vehicles in Q1 of 2023. Electric vehicles utilize an electric motor for propulsion powered by lithium batteries, which suffer from high temperatures caused by peak operation conditions and rapid charging, so hybridization with supercapacitors is implemented. In this paper, a fuzzy logic controller is employed based on a rule-based scheme and the Mamdani model to control the power distribution of the hybrid system, driven by the state of charge and duty cycle parameters. An active topology with one bi-directional DC-to-DC converter at each source is exploited in the MATLAB/Simulink environment, and five power states like acceleration and coasting are identified. Results show that the ideal duty cycle is within 0.40–0.50 as a universal value for all power states, which may vary depending on the available state of charge. Total efficiency is enhanced by 6%, sizing is increased by 22%, leading to a more compact layout, and battery life is extended by 20%. Future work includes testing with larger energy sources and the application of this management strategy in real-time operations.

Keywords: battery; ultracapacitor; hybrid; energy; management; fuzzy; control (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2023
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