Transformer-less photovoltaic (PV) inverters: A critical comparison

Author

Poliseno, M.C. ; Mastromauro, R.A. ; Liserre, M.

Author_Institution

Dept. of Electr. & Electron. Eng., Politec. of Bari, Bari, Italy

fYear

2012

fDate

15-20 Sept. 2012

Firstpage

3438

Lastpage

3445

Abstract

Transformer-less photovoltaic (PV) inverters specifically designed to achieve high efficiency shall also comply with leakage current limits, low current harmonic distortion and reactive power handling capability. This paper aims at benchmarking some recently published or patented topologies with the most successful industrial products and it offers a complete trends scenario and a critical comparison. The performances are evaluated in terms of efficiency, common-mode voltage, leakage current, power quality, reactive power handling capability, size of the grid filter and power converter rating.

Keywords

harmonic distortion; leakage currents; photovoltaic power systems; power convertors; power grids; power harmonic filters; power supply quality; reactive power; PV inverter; benchmarking; common-mode voltage; grid filter size; leakage current limit; low current harmonic distortion; patented topology; power converter rating; power quality; reactive power handling capability; transformer-less photovoltaic inverter; Arrays; Inverters; Leakage current; Schottky diodes; Switches; Topology; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2012 IEEE

Conference_Location

Raleigh, NC

Print_ISBN

978-1-4673-0802-1

Electronic_ISBN

978-1-4673-0801-4

Type

conf

DOI

10.1109/ECCE.2012.6342323

Filename

6342323