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A New Switched-Ladder Multilevel Converter Structure with Reduced Power Electronic Components

Rasoul Shalchi Alishah

Department of Electronics Design, Mid-Sweden University, SE-851 70 Sundsvall, Sweden

E-mail Address: rasoul.shalchialishah@miun.se

E-mail Address: rasoul.shalchi@gmail.com

Corresponding author.

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Kent Bertilsson

Department of Electronics Design, Mid-Sweden University, SE-851 70 Sundsvall, Sweden

E-mail Address: kent.bertilsson@miun.se

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Naser Vosoughi Kurdkandi

Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran

E-mail Address: naser.vosoughi.kurdkandi@gmail.com

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Seyed Hossein Hosseini

Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran

Engineering Faculty, Near East University, 99138 Nicosia, Turkish Republic of Northern Cyprus (TRNC), Mersin 10, Turkey

E-mail Address: hosseini116j@yahoo.com

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Amirreza Zarrin Gharehkoushan

Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran

E-mail Address: zarrin.gharehkoushan@gmail.com

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, and

Jagabar Sathik Mohd Ali

Department of Electrical and Electronics, SRM Institute of Science and Technology, Chennai 603203, Tamil Nadu, India

E-mail Address: mjsathik@ieee.org

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https://doi.org/10.1142/S0218126621502170Cited by:8 (Source: Crossref)

Abstract

This paper presents a new switched-ladder structure for multilevel converter which consists of several bidirectional and unidirectional switches along with DC voltage sources. The values of DC sources in the proposed topology are determined based on a new mathematical algorithm. The proposed multilevel converter is an extended structure, which can produce any levels at output voltage waveform. To prove the merits of the proposed structure, the proposed converter is compared with other similar structures. According to comparison results, it is shown that the presented structure requires the least numbers of DC sources, IGBTs, drivers and on-state switches. Also, the value of voltage rating of the switches is analyzed. The experimental results are provided for the proposed 17-level converter to prove the performance of suggested structure.

This paper was recommended by Regional Editor Piero Malcovati.

Keywords:

References

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