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Open AccessArticle

Bidirectional Twisted Single-Stage Single-Phase Buck-Boost DC-AC Converter

Department of Electrical Power Engineering and Mechatronics, Tallinn University of Technology (TalTech), 10111 Tallinn, Estonia
Biomedical Radioelectronic Apparatus and Systems Department, Chernihiv National University of Technology (ChNTU), 14039 Chernihiv, Ukraine
Department of Electrical, Electronic and Control Engineering, School of Industrial Engineering, University of Extremadura, 06006 Badajoz, Spain
Institute of Electrodynamics, National Academy of science of Ukraine, 01030 Volodymyrska, Ukraine
Author to whom correspondence should be addressed.
Energies 2019, 12(18), 3505;
Received: 12 August 2019 / Revised: 2 September 2019 / Accepted: 8 September 2019 / Published: 11 September 2019
(This article belongs to the Special Issue Emerging DC/AC Converters for Storage and Renewable Application)
This paper describes a bidirectional twisted single-phase single-stage buck-boost dc-ac converter based on an output unfolding circuit. This solution is derived by the combination of an inverting buck-boost dc-dc converter and an unfolding circuit. The operation principle, component design guidelines, along with the control approach are presented. The zero-crossing distortion problem is discussed and solved by a simple approach. The simulation and experimental results confirm all theoretical statements. Loss distribution and achievable efficiency are analyzed. Finally, the pros and cons of the proposed solution, along with the most promising application field, are analyzed and discussed in the conclusion. View Full-Text
Keywords: unfolding circuit; bidirectional dc-ac converter; buck-boost converter unfolding circuit; bidirectional dc-ac converter; buck-boost converter
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Husev, O.; Matiushkin, O.; Roncero-Clemente, C.; Vinnikov, D.; Chopyk, V. Bidirectional Twisted Single-Stage Single-Phase Buck-Boost DC-AC Converter. Energies 2019, 12, 3505.

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