Improving the Overall Efficiency for DC/DC Converter with LoV-HiC System

It is very important to improve the overall efficiency of systems with a source of power that has low-voltage high-current terminal characteristics such as fuel cells. A resonant converter is required for high efficiency systems. However, the peak value of the switches current is large in a resonant converter. This peak current requires a large number of switches and results in system failures. In this paper, an analysis and experiments of a resonant isolation push-pull converter are performed. A switching loss analysis is performed in order to compare losses between a resonant push pull converter and a hard switching push-pull converter. Specially, the conduction loss is studied based on the ratio between the resonant frequency and the switching frequency. In addition, a method for improving the efficiency is implemented with conventional HF insolation converters.

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Cite this article

[IEEE Style]

D. Han, Y. Lee, W. Kwon, M. A. Bou-Rabee, G. Choe, "Improving the Overall Efficiency for DC/DC Converter with LoV-HiC System," Journal of Power Electronics, vol. 12, no. 3, pp. 418-428, 2012. DOI: 10.6113/JPE.2012.12.3.418.

[ACM Style]

Dong-Hwa Han, Young-Jin Lee, Wan-Sung Kwon, Mohammed A. Bou-Rabee, and Gyu-Ha Choe. 2012. Improving the Overall Efficiency for DC/DC Converter with LoV-HiC System. Journal of Power Electronics, 12, 3, (2012), 418-428. DOI: 10.6113/JPE.2012.12.3.418.