Journal
ENERGIES
Volume 10, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/en10071034
Keywords
electric vehicles; fast balancing system; high efficiency of balancing system; fuzzy logic controller
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Funding
- Commonwealth of Australia through Australia Research Council (ARC) Linkage Grant [LP110200302]
- Australian Research Council [LP110200302] Funding Source: Australian Research Council
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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.
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