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Optimized design guideline of battery-cell equalizers based on the wave-trap concept

Author:
Arias Pérez de Azpeitia, ManuelUniovi authority; Sebastián Zúñiga, Francisco JavierUniovi authority; Hernando Álvarez, Marta MaríaUniovi authority; Vázquez Ardura, AitorUniovi authority; Viscarret, Unai
Subject:

Battery

Balancing

Wave trap

Frequency

Publication date:
2015
Editorial:

IEEE

Publisher version:
http://dx.doi.org/10.1109/ECCE.2015.7310373
Descripción física:
p. 5060-5067
Abstract:

Active equalizers, with a higher efficiency in comparison to passive ones, have the disadvantage of using a considerable number of components. The wave-trap concept allows the battery cell equalizer to use its switching frequency as the control variable that decides which cell is being charged. Hence, the number of controlled switches is strongly reduced without reducing the performance of the system. In this paper, an optimized design guideline for an equalizer based on this concept is presented. First, the mathematical equations that describe the behavior of each trap are introduced. Then, these equations are used for calculating the optimum value of all the parameters of the system. This optimum calculation is based on relating the injected energy in the battery cell and the resonant energy of the chosen trap. This design guideline has been used in the development of a 4-battery-cell equalizer based on a half-bridge structure

Active equalizers, with a higher efficiency in comparison to passive ones, have the disadvantage of using a considerable number of components. The wave-trap concept allows the battery cell equalizer to use its switching frequency as the control variable that decides which cell is being charged. Hence, the number of controlled switches is strongly reduced without reducing the performance of the system. In this paper, an optimized design guideline for an equalizer based on this concept is presented. First, the mathematical equations that describe the behavior of each trap are introduced. Then, these equations are used for calculating the optimum value of all the parameters of the system. This optimum calculation is based on relating the injected energy in the battery cell and the resonant energy of the chosen trap. This design guideline has been used in the development of a 4-battery-cell equalizer based on a half-bridge structure

URI:
http://hdl.handle.net/10651/37782
ISBN:
9781467371506
DOI:
10.1109/ECCE.2015.7310373
Patrocinado por:

Spanish Government under projects CONSOLIDER MICINN-10-CSD2009-00046 and ANRI-DOC (DPI2013- 47176-C2-2-R), by European Union under project SPEED (FP7-NMP3-LA- 2013-604057) and by IKERLAN and ORONA under project FUO-EM-072- 13

Id. Proyecto:

MICINN-10-CSD2009-00046

ANRI-DOC (DPI2013-47176-C2-2-R)

SPEED (FP7-NMP3-LA-2013-604057)

FUO-EM-072-13

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