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

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. H...

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Main Authors: Kumar, R., Kannan, R., Nor, N.B.M., Mahmud, A.
Format: Article
Published: MDPI AG 2021
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104035266&doi=10.3390%2felectronics10080924&partnerID=40&md5=5e782151872abe2559c732735ff4a8b7
http://eprints.utp.edu.my/23732/
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spelling my.utp.eprints.237322021-08-19T09:40:17Z A high step-up switched z-source converter (Hs-szc) with minimal components count for enhancing voltage gain Kumar, R. Kannan, R. Nor, N.B.M. Mahmud, A. 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. © 2021 by the authors. Licensee MDPI, Basel, Switzerland. MDPI AG 2021 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104035266&doi=10.3390%2felectronics10080924&partnerID=40&md5=5e782151872abe2559c732735ff4a8b7 Kumar, R. and Kannan, R. and Nor, N.B.M. and Mahmud, A. (2021) A high step-up switched z-source converter (Hs-szc) with minimal components count for enhancing voltage gain. Electronics (Switzerland), 10 (8). http://eprints.utp.edu.my/23732/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
description 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. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
format Article
author Kumar, R.
Kannan, R.
Nor, N.B.M.
Mahmud, A.
spellingShingle Kumar, R.
Kannan, R.
Nor, N.B.M.
Mahmud, A.
A high step-up switched z-source converter (Hs-szc) with minimal components count for enhancing voltage gain
author_facet Kumar, R.
Kannan, R.
Nor, N.B.M.
Mahmud, A.
author_sort Kumar, R.
title A high step-up switched z-source converter (Hs-szc) with minimal components count for enhancing voltage gain
title_short A high step-up switched z-source converter (Hs-szc) with minimal components count for enhancing voltage gain
title_full A high step-up switched z-source converter (Hs-szc) with minimal components count for enhancing voltage gain
title_fullStr A high step-up switched z-source converter (Hs-szc) with minimal components count for enhancing voltage gain
title_full_unstemmed A high step-up switched z-source converter (Hs-szc) with minimal components count for enhancing voltage gain
title_sort high step-up switched z-source converter (hs-szc) with minimal components count for enhancing voltage gain
publisher MDPI AG
publishDate 2021
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104035266&doi=10.3390%2felectronics10080924&partnerID=40&md5=5e782151872abe2559c732735ff4a8b7
http://eprints.utp.edu.my/23732/
_version_ 1738656513835139072
score 13.211869

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