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Review of transformerless inverter topologies

conference contribution
posted on 2013-01-01, 00:00 authored by M Alzoubi, Aman Maung Than OoAman Maung Than Oo, S Azad
In the recent years, there has been a widespread trend in the use of the transformerless inverters in the single-phase grid-connected photovoltaic systems. This has been motivated by the low price, minor size, light mass, and great efficiency associated with them. However, when no transformer is used, common-mode voltage appears and leads to ground leakage current through the Photovoltaic parasitic capacitance to the ground due to the non-galvanic isolation configuration. This has lead to a main research focus on ways of minimizing or eliminating these leakage currents without influencing the efficiency of the system. Different topologies have been suggested to eliminate the leakage current in the transformerless grid-connected photovoltaic (PV) systems. In this paper, a review of these transformerless topologies is carried out, in regard to the leakage current for single phase. The benefits, in regard to each scheme, are outlined and their disadvantages explained.

History

Event

Power and Energy Systems. International Conference (6th : 2013 : Phuket, Thailand)

Pagination

197 - 203

Publisher

ACTA Press

Location

Phuket, Thailand

Place of publication

Calgary, Canada

Start date

2013-04-10

End date

2013-04-12

ISBN-13

9780889869592

ISBN-10

0889869596

Language

eng

Publication classification

E1.1 Full written paper - refereed

Editor/Contributor(s)

S Kaitwanidvilai

Title of proceedings

Asia PES 2013 : Proceedings of the IASTED Power and Energy Systems 2013 international conference

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