A novel transformerless high step‐Up DC‐DC converter with active switched‐inductor and quasi‐Z‐source network

Abstract Conventional dc–dc boost converters have limited boosting capabilities, and the main switching device may suffer relatively high voltage stress and current stress. A novel transformerless dc‐dc boost converter is proposed in this paper. The proposed topology, which combines the traditional...

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Main Authors: Jiawei Zhao, Daolian Chen, Jiahui Jiang
Format: Article
Language:English
Published: Wiley 2021-07-01
Series:IET Power Electronics
Subjects:
Online Access:https://doi.org/10.1049/pel2.12128
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author Jiawei Zhao
Daolian Chen
Jiahui Jiang
author_facet Jiawei Zhao
Daolian Chen
Jiahui Jiang
author_sort Jiawei Zhao
collection DOAJ
description Abstract Conventional dc–dc boost converters have limited boosting capabilities, and the main switching device may suffer relatively high voltage stress and current stress. A novel transformerless dc‐dc boost converter is proposed in this paper. The proposed topology, which combines the traditional active switch‐inductor and quasi‐Z‐source network, can increase the voltage gain without limiting the duty cycle or increasing the voltage and current stresses of the power switches. The detailed analysis including working principles, steady‐state characteristics, non‐ideal element analysis and a comprehensive comparison is also presented in this paper. To verify the proposed converter's performance, a prototype circuit with 20–30 V input voltage, 200 V output voltage, and 200 W output power is implemented in the laboratory. Experiment results confirm the theoretical analysis and advantages of the proposed converter.
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spelling doaj.art-aac9151334294c47bed064a06faa2ae72022-12-22T03:22:34ZengWileyIET Power Electronics1755-45351755-45432021-07-011491592160510.1049/pel2.12128A novel transformerless high step‐Up DC‐DC converter with active switched‐inductor and quasi‐Z‐source networkJiawei Zhao0Daolian Chen1Jiahui Jiang2College of Electrical Engineering Qingdao University Qingdao ChinaCollege of Electrical Engineering Qingdao University Qingdao ChinaCollege of Electrical Engineering Qingdao University Qingdao ChinaAbstract Conventional dc–dc boost converters have limited boosting capabilities, and the main switching device may suffer relatively high voltage stress and current stress. A novel transformerless dc‐dc boost converter is proposed in this paper. The proposed topology, which combines the traditional active switch‐inductor and quasi‐Z‐source network, can increase the voltage gain without limiting the duty cycle or increasing the voltage and current stresses of the power switches. The detailed analysis including working principles, steady‐state characteristics, non‐ideal element analysis and a comprehensive comparison is also presented in this paper. To verify the proposed converter's performance, a prototype circuit with 20–30 V input voltage, 200 V output voltage, and 200 W output power is implemented in the laboratory. Experiment results confirm the theoretical analysis and advantages of the proposed converter.https://doi.org/10.1049/pel2.12128Power electronics, supply and supervisory circuitsDC‐DC power convertorsTransformers and reactors
spellingShingle Jiawei Zhao
Daolian Chen
Jiahui Jiang
A novel transformerless high step‐Up DC‐DC converter with active switched‐inductor and quasi‐Z‐source network
IET Power Electronics
Power electronics, supply and supervisory circuits
DC‐DC power convertors
Transformers and reactors
title A novel transformerless high step‐Up DC‐DC converter with active switched‐inductor and quasi‐Z‐source network
title_full A novel transformerless high step‐Up DC‐DC converter with active switched‐inductor and quasi‐Z‐source network
title_fullStr A novel transformerless high step‐Up DC‐DC converter with active switched‐inductor and quasi‐Z‐source network
title_full_unstemmed A novel transformerless high step‐Up DC‐DC converter with active switched‐inductor and quasi‐Z‐source network
title_short A novel transformerless high step‐Up DC‐DC converter with active switched‐inductor and quasi‐Z‐source network
title_sort novel transformerless high step up dc dc converter with active switched inductor and quasi z source network
topic Power electronics, supply and supervisory circuits
DC‐DC power convertors
Transformers and reactors
url https://doi.org/10.1049/pel2.12128
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