Comparative Evaluation of Common-Ground Converters for Dual-Purpose Application

Tala Hemmati Shahsavar, Saeed Rahimpour, Naser Vosoughi Kurdkandi, Artem Fesenko, Oleksandr Matiushkin, Oleksandr Husev and Dmitri Vinnikov ()
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Tala Hemmati Shahsavar: Department of Electrical Power Engineering and Mechatronics, School of Engineering, Tallinn University of Technology, 12616 Tallinn, Estonia
Saeed Rahimpour: Department of Electrical Power Engineering and Mechatronics, School of Engineering, Tallinn University of Technology, 12616 Tallinn, Estonia
Naser Vosoughi Kurdkandi: Department of Electrical Power Engineering and Mechatronics, School of Engineering, Tallinn University of Technology, 12616 Tallinn, Estonia
Artem Fesenko: Department of Radiotechnic and Embeded Systems, Chernihiv Polytechnic National University, 14027 Chernihiv, Ukraine
Oleksandr Matiushkin: Department of Electrical Power Engineering and Mechatronics, School of Engineering, Tallinn University of Technology, 12616 Tallinn, Estonia
Oleksandr Husev: Department of Electrical Power Engineering and Mechatronics, School of Engineering, Tallinn University of Technology, 12616 Tallinn, Estonia
Dmitri Vinnikov: Department of Electrical Power Engineering and Mechatronics, School of Engineering, Tallinn University of Technology, 12616 Tallinn, Estonia

Energies, 2023, vol. 16, issue 7, 1-20

Abstract: The focus of this paper is to provide a comparative analysis of various common-ground converters that serve as dual-purpose power electronic interfaces. These interfaces are designed to be used in both DC and single-phase AC grids, utilizing the same terminals for both modes of operation. The idea lies in the utilization of the same semiconductors in the DC-DC and DC-AC configurations, resulting in minimal redundancy. Particular attention is focused on the comparative evaluation approach. A novel Flying Inductor (FI)-based converter was selected for experimental verification. The design example and experimental prototype of a dual-purpose DC-DC/AC power electronic converter is capable of providing 2 kVA of power in AC mode and 4 kW in DC mode. The experimental results indicate that the converter can operate in both AC and DC grids according to their respective modes. The conclusion of the study highlights the potential applications and main benefits of this technology.

Keywords: DC-DC power converter; DC-AC power converter; common-ground power converter; boost power converter; buck–boost power converter; leakage current (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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