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http://dx.doi.org/10.6113/JPE.2012.12.1.83

Input Voltage Sharing Control for Input-Series-Output-Parallel DC-DC Converters without Input Voltage Sensors  

Guo, Zhiqiang (School of Automation, Beijing Institute of Technology)
Sha, Deshang (School of Automation, Beijing Institute of Technology)
Liao, Xiaozhong (School of Automation, Beijing Institute of Technology)
Publication Information
Journal of Power Electronics / v.12, no.1, 2012 , pp. 83-87 More about this Journal
Abstract
Input-series-output-parallel (ISOP) modular converters consisting of multiple modular DC/DC converters can enable low voltage rating switches for use in high voltage input applications. In this paper, an input voltage sharing control strategy for input-series-output-parallel (ISOP) full-bridge (FB) DC/DC converters is proposed. By sensing the difference in the input current of two modules, the system can achieve input voltage sharing for DC-DC modules. The effectiveness of the proposed control strategy is verified by simulation and experimental results obtained with a 200w-50kHz prototype.
Keywords
DC/DC converters; Input-series-output-parallel; Input voltage sharing;
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