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Title: Sigma-Z-source inverters
Authors: Soon, Jing Jun
Low, Kay-Soon
Keywords: DRNTU::Engineering::Electrical and electronic engineering::Power electronics
Issue Date: 2015
Source: Soon, J. J., & Low, K.-S. (2015). Sigma-Z-source inverters. IET Power Electronics, 8(5), 715-723.
Series/Report no.: IET power electronics
Abstract: To increase the boost capability with minimum passive components, existing transformer-based Z-source inverter (ZSI) topologies require the turn ratio to be increased. This results in larger transformer windings to be used in high dc-ac voltage gain applications. This shortcoming is addressed in this study by introducing a sigma-ZSI (ΣZSI) that improves the dc-ac voltage gain by reducing the turn ratio leading to a lower winding transformer. The proposed topology is compared with the TZSI as they used the same number of transformers and capacitors configured in an X-shaped network. The comparison shows that the ΣZSI will have a higher dc-ac voltage gain at a turn ratio lower than 1.618 for a given shoot-through duty cycle allowing the use of smaller transformers. Simulation and experimental results have validated the effectiveness of the proposed ΣZSI.
ISSN: 1755-4535
DOI: 10.1049/iet-pel.2014.0274
Rights: © 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: [].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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