Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Modeling, analysis and experimental verification of two non-electrolytic capacitor Z-source converters

  • Guidong Zhang (School of Automation, Guangdong University of Technology) ;
  • Zexiang Chen (School of Automation, Guangdong University of Technology) ;
  • Samson S. Yu (School of Engineering, Deakin University)
  • Received : 2022.06.20
  • Accepted : 2022.10.13
  • Published : 2023.03.20
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Abstract

This paper gives a detailed theoretical analysis of two popular non-electrolytic capacitor NEC-Z-source converters (NEC-ZSCs) including analyses of their operation, the voltage stresses of the capacitors and diodes, the current stresses of the inductors, the voltage and current stresses of the switches, and the voltage gain with and without considering parasitic parameters. Parameter design and small signal modeling of NEC-ZSCs are conducted, and a proportional-integral (PI) controller is designed to form the closed-loop control circuit. Simulations and experiments are conducted and their results are collected and analyzed. These results corroborate the feasibility and effectiveness of the theoretical analysis for the two NEC-ZSCs and the closed-loop control design.

Keywords

Acknowledgement

The work is supported by the Foundation of Key Laboratory of System Control and Information Processing, Ministry of Education, P.R. China under granted No. AF0300354.

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