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This paper provides an equivalent series resistance-based real-time control method for the battery-ultracapacitor hybrid system. The idea of this control method is that the dynamic load demand is distributed based on the equivalent series resistance ratio of batteries to ultracapacitors, whilst the estimated average load demand based on the past N seconds is supplied by the batteries. In addition,...
This paper provides a quantitative analysis on the energy efficiencies of the battery-ultracapacitor hybrid energy storage system and the lithium-ion-battery-only system under the JC08 driving cycle. There are two control parameters selected in the analysis, the efficiency of the DC-DC converter and the internal resistance of the battery pack. The analysis shows that compared to the battery-only system...
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