000056833 001__ 56833
000056833 005__ 20161027084146.0
000056833 0247_ $$2doi$$a10.1016/j.jpowsour.2015.09.122
000056833 0248_ $$2sideral$$a92314
000056833 037__ $$aART-2016-92314
000056833 041__ $$aeng
000056833 100__ $$0(orcid)0000-0002-4834-940X$$aOyarbide Usabiaga, Estanislao$$uUniversidad de Zaragoza
000056833 245__ $$aVoltage equalization of an ultracapacitor module by cell grouping using number partitioning algorithm
000056833 260__ $$c2016
000056833 5060_ $$aAccess copy available to the general public$$fUnrestricted
000056833 5203_ $$aUltracapacitors are low voltage devices and therefore, for practical applications, they need to be used in modules of series-connected cells. Because of the inherent manufacturing tolerance of the capacitance parameter of each cell, and as the maximum voltage value cannot be exceeded, the module requires inter-cell voltage equalization. If the intended application suffers repeated fast charging/discharging cycles, active equalization circuits must be rated to full power, and thus the module becomes expensive. Previous work shows that a series connection of several sets of paralleled ultracapacitors minimizes the dispersion of equivalent capacitance values, and also the voltage differences between capacitors. Thus the overall life expectancy is improved. This paper proposes a method to distribute ultracapacitors with a number partitioning-based strategy to reduce the dispersion between equivalent submodule capacitances. Thereafter, the total amount of stored energy and/or the life expectancy of the device can be considerably improved.
000056833 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000056833 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000056833 700__ $$0(orcid)0000-0001-9334-4870$$aBernal Ruiz, Carlos$$uUniversidad de Zaragoza
000056833 700__ $$0(orcid)0000-0002-4592-769X$$aMolina Gaudó, María Pilar$$uUniversidad de Zaragoza
000056833 700__ $$aJiménez, L. A.
000056833 700__ $$aGálvez, R.
000056833 700__ $$aMartínez, A.
000056833 7102_ $$15008$$2785$$aUniversidad de Zaragoza$$bDepartamento de Ingeniería Electrónica y Comunicaciones$$cTecnología Electrónica
000056833 773__ $$g301 (2016), 113-121$$pJ. power sources$$tJOURNAL OF POWER SOURCES$$x0378-7753
000056833 8564_ $$s286083$$uhttp://zaguan.unizar.es/record/56833/files/texto_completo.pdf$$yPostprint
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000056833 909CO $$ooai:zaguan.unizar.es:56833$$particulos$$pdriver
000056833 951__ $$a2016-10-26-10:06:08
000056833 980__ $$aARTICLE