Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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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)
  • Received : 2010.06.12
  • Accepted : 2011.10.06
  • Published : 2012.01.20
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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.

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References

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