New Multilevel Mixed Topology Development to Improve Inverter Robustness for Domestic Photovoltaic Installations

Sébastien Jacques, Adelphe Caldeira, Ambroise Schellmanns, Zheng Ren, Nathalie Batut

GREMAN UMR-CNRS 7347, University of Tours, 7 Avenue Marcel Dassault, 37200 Tours, France..

DOI: 10.4236/jpee.2013.15001                

Abstract

Multilevel inverters are well used in grid connected domestic photovoltaic applications because of their ability to generate a very good quality of waveforms, reducing switching frequency, and their low voltage stress across the power devices. However, this kind of inverter has to be modified to both limit common-mode currents and improve the robustness of the system. This paper presents a new mixed 5-level inverter that meets these challenges. The operating principle of the converter is proposed. Several experimental measurements are described to validate this new concept. The output voltage and current and the THD of the output voltage are particularly discussed.

Keywords

Domestic PV Applications; Common Mode Currents; Decoupling Capacitances; Mixed 5-Level Inverter

Conflicts of Interest

The authors declare no conflicts of interest.

References

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