A High Step-Up Z-Source DC-DC Converter for Integration of Photovoltaic Panels into DC Microgrid
This paper presents a Z-source-based high step-up DC-DC converter that benefits from high voltage gain, low voltage stress on the semiconductor devices and the capacitors. The switched-capacitor cells are integrated with the conventional Z-source impedance network resulting in a new high step-up DC-DC converter. The proposed converter is suitable for photovoltaic (PV) applications where PV panels are linked to a 400 V DC bus in a DC microgrid. The proposed converter reduces the voltage stress on the diodes and the power switch to less than half the output voltage and achieves a high-voltage gain without imposing a limitation on the duty cycle and requiring a large number of components. The operating principles, the steady-state analysis, and a comparison with other similar high step-up DC-DC converters are presented. The simulation and experimental results validate the performance and the applicability of the proposed converter.
R. Rahimi et al., "A High Step-Up Z-Source DC-DC Converter for Integration of Photovoltaic Panels into DC Microgrid," Proceedings of the 2021 IEEE Applied Power Electronics Conference and Exposition (2021, Phoenix, AZ), pp. 1416 - 1420, Institute of Electrical and Electronics Engineers (IEEE), Jun 2021.
The definitive version is available at https://doi.org/10.1109/APEC42165.2021.9487463
2021 IEEE Applied Power Electronics Conference and Exposition, APEC 2021 (2021: Jun. 14-17, Phoenix, AZ)
Electrical and Computer Engineering
Keywords and Phrases
DC Microgrid; High Step-Up DC-DC Converter; Photovoltaic; Switched-Capacitor Cell; Z-Source Converter
International Standard Book Number (ISBN)
Article - Conference proceedings
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17 Jun 2021