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A high step-up switched z-source converter (Hs-szc) with minimal components count for enhancing voltage gain

Kumar, R, Kannan, R, Nor, NBM and Mahmud, Md Apel 2021, A high step-up switched z-source converter (Hs-szc) with minimal components count for enhancing voltage gain, Electronics, vol. 10, no. 8, pp. 1-25, doi: 10.3390/electronics10080924.

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Title A high step-up switched z-source converter (Hs-szc) with minimal components count for enhancing voltage gain
Author(s) Kumar, R
Kannan, R
Nor, NBM
Mahmud, Md ApelORCID iD for Mahmud, Md Apel orcid.org/0000-0002-5302-5338
Journal name Electronics
Volume number 10
Issue number 8
Start page 1
End page 25
Total pages 25
Publisher MDPI AG
Place of publication Basel, Switzerland
Publication date 2021
ISSN 2079-9292
Keyword(s) DC-DC converter
switched Z-source
high voltage gain
renewable energy sources
low voltage
Summary Some applications such as fuel cells or photovoltaic panels offer low output voltage, and it is essential to boost this voltage before connecting to the grid through an inverter. The Z-network converter can be used for the DC-DC conversion to enhance the output voltage of renewable energy sources. However, boosting capabilities of traditional Z-network boost converters are limited, and the utilization of higher parts count makes it bulky and expensive. In this paper, an efficient, high step-up, switched Z-source DC-DC boost converter (HS-SZC) is presented, which offers a higher boost factor at a smaller duty ratio and avoids the instability due to the saturation of inductors. In the proposed converter, the higher voltage gain is achieved by using one inductor and switch at the back end of the conventional Z-source DC-DC converter (ZSC). The idea is to utilize the output capacitor for filtering and charging and discharging loops. Moreover, the proposed converter offers a wider range of load capacity, thus minimizing the power losses and enhancing efficiency. This study simplifies the structure of conventional Z-source converters through the deployment of fewer components, and hence making it more cost-effective and highly efficient, compared to other DC-DC boost converters. Furthermore, a comparison based on the boosting capability and number of components is provided, and the performance of the proposed design is analyzed with non-ideal elements. Finally, simulation and experimental studies are carried out to evaluate and validate the performance of the proposed converter.
Language eng
DOI 10.3390/electronics10080924
Indigenous content off
Field of Research 0906 Electrical and Electronic Engineering
HERDC Research category C1 Refereed article in a scholarly journal
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30150461

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.