Journal
INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS
Volume -, Issue -, Pages -Publisher
WILEY
DOI: 10.1002/cta.3740
Keywords
bidirectional converter; integrated converter; LC circuit; voltage equalizer
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In this paper, the voltage equalizer in energy storage systems is simplified by integrating it into the bidirectional converter of the battery system, eliminating the need for a separate DC-DC converter. The integrated system utilizes an LC resonant circuit and a voltage multiplier as the voltage equalization circuit, which offers simplicity and low complexity. The design process based on the analysis model allows the equalizer to achieve optimal parameter configuration. Test results demonstrate that the proposed LC-SVM can automatically achieve voltage balance between energy storage cells without additional control.
In energy storage systems, a voltage equalizer is always needed. The voltage equalizers often include a DC-DC converter. In this paper, the DC-DC converter in the voltage equalizer is saved by integrating the voltage equalization circuit into the bidirectional converter of the battery system, thus simplifying the system. The voltage equalization circuit in the integrated system is composed of a LC resonant circuit and a voltage multiplier, which has the advantages of simplicity and low complexity. This paper presents the design process based on the analysis model, which enables the equalizer to obtain the optimal parameter configuration. Test results show the proposed LC-SVM can automatically realize voltage balance between energy storage cells without additional control.
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