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Energies 2017, 10(7), 1034; https://doi.org/10.3390/en10071034

A Fast Multi-Switched Inductor Balancing System Based on a Fuzzy Logic Controller for Lithium-Ion Battery Packs in Electric Vehicles

1
Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
2
School of Electrical Engineering and Automation, Anhui University, Hefei 230000, China
*
Author to whom correspondence should be addressed.
Received: 7 June 2017 / Revised: 6 July 2017 / Accepted: 14 July 2017 / Published: 19 July 2017
(This article belongs to the Section Energy Storage and Application)
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Abstract

Based on a low cost multi-switched inductor balancing circuit (MSIBC), a fuzzy logic (FL) controller is proposed to improve the balancing performances of lithium-ion battery packs instead of an existing proportional-integral (PI) controller. In the proposed FL controller, a cell’s open circuit voltages (OCVs) and their differences in the pack are used as the inputs, and the output of the FL controller is the balancing current. The FL controller for the MSIBC has the advantage of maintaining high balancing currents over the existing PI controller in almost the entire balancing process for different lithium battery types. As a result, the proposed FL controller takes a much shorter time to achieve battery pack balancing, and thus more pack capacity can be recovered. This will help to improve the pack performance in electric vehicles and extend the serving time of the battery pack. View Full-Text
Keywords: electric vehicles; fast balancing system; high efficiency of balancing system; fuzzy logic controller electric vehicles; fast balancing system; high efficiency of balancing system; fuzzy logic controller
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Cui, X.; Shen, W.; Zhang, Y.; Hu, C. A Fast Multi-Switched Inductor Balancing System Based on a Fuzzy Logic Controller for Lithium-Ion Battery Packs in Electric Vehicles. Energies 2017, 10, 1034.

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