Modeling, analysis and experimental verification of two non‑electrolytic capacitor Z‑source converters

Guidong Zhang; Zexiang Chen; Samson S. Yu

Modeling, analysis and experimental verification of two non‑electrolytic capacitor Z‑source converters

Guidong Zhang

Zexiang Chen

Samson S. Yu

Vol. 23, No. 3, pp. 387-399, Mar. 2023

10.1007/s43236-022-00548-1

Detailed theoretical analysis

Voltage gain

Parameter design

Small signal modeling

Closed-loop

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.

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Cite this article

[IEEE Style]

G. Zhang, Z. Chen, S. S. Yu, "Modeling, analysis and experimental verification of two non‑electrolytic capacitor Z‑source converters," Journal of Power Electronics, vol. 23, no. 3, pp. 387-399, 2023. DOI: 10.1007/s43236-022-00548-1.

[ACM Style]

Guidong Zhang, Zexiang Chen, and Samson S. Yu. 2023. Modeling, analysis and experimental verification of two non‑electrolytic capacitor Z‑source converters. Journal of Power Electronics, 23, 3, (2023), 387-399. DOI: 10.1007/s43236-022-00548-1.