Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

A Five-Level Converter in a Three-Level Mode for Common-Mode Leakage Current Suppression in PV-Generation Systems

Version 1 : Received: 12 July 2021 / Approved: 13 July 2021 / Online: 13 July 2021 (11:29:11 CEST)

How to cite: Udovichenko, A.V.; Brovanov, S.V.; Grishanov, E.V.; Stennikova, S.M. A Five-Level Converter in a Three-Level Mode for Common-Mode Leakage Current Suppression in PV-Generation Systems. Preprints 2021, 2021070304 (doi: 10.20944/preprints202107.0304.v1). Udovichenko, A.V.; Brovanov, S.V.; Grishanov, E.V.; Stennikova, S.M. A Five-Level Converter in a Three-Level Mode for Common-Mode Leakage Current Suppression in PV-Generation Systems. Preprints 2021, 2021070304 (doi: 10.20944/preprints202107.0304.v1).

Abstract

Power generation systems based on renewable energy sources are finding ever-widening applications and many researchers work on this problem. Many papers address the problem of transformerless structures, but few of them are aimed at conducting research on structures with multilevel converter topologies. In this paper a grid-tied transformerless PV-generation system based on a multilevel converter is discussed. There are common-mode leakage currents which act as a parasitic factor. It is also known that common-mode voltage is the main cause of the common-mode leakage current in grid-tied PV-generation systems. This paper considers the space vector pulse-width modulation (PWM) technique which is used to suppress or reduce common-mode leakage current. The proposed engineering solutions for a generation system based on the multilevel converter controlled with a pulse-width modulation technique are verified by experiment.

Subject Areas

converter; leakage current; common-mode; renewable

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