Digital Control Strategy for Input-Series-Output-Parallel Modular DC/DC Converters

作者：Sha Deshang^*; Guo Zhiqiang; Liao Xiaozhong

来源：Journal of Power Electronics, 2010, 10(3): 245-250.

• Digital control
• Forward DC/DC
• Input-series and output-parallel
• Modular DC/DC converters
• Voltage sharing

Input-series-output-parallel (ISOP) converters consisting of multiple modular DC/DC converters can enable low voltage rating switches to be used under high voltage input applications. This paper presents a digital control strategy, which can achieve equal sharing of input voltage for a modular ISOP system consisting of two-transistor forward DC/DC converters by forcing the input voltages of neighboring modules to be equal. The proposed scheme is analyzed using small signals analysis based on the state space average method. The performance of the proposed control strategy is verified with an experimental prototype of an ISOP converter made up of three two-switch forward converters.

• 出版日期2010-5
• 单位北京理工大学