Leakage current measurement in transformerless PV inverters

Tamas Kerekes; Dezso Sera; Laszlo Mathe

doi:10.1109/OPTIM.2012.6231835

Leakage current measurement in transformerless PV inverters

Authors:

Kerekes, Tamas ;
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0000-0001-7594-3298
Department of Energy Technology, The Faculty of Engineering and Science, Aalborg University
Sera, Dezso ;
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0000-0001-9050-2423
Power Electronic Systems, Department of Energy Technology, The Faculty of Engineering and Science, Aalborg University
Mathe, Laszlo
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0000-0002-1029-3340
Department of Energy Technology, The Faculty of Engineering and Science, Aalborg University

DOI:

10.1109/OPTIM.2012.6231835

Abstract:

Photovoltaic (PV) installations have seen a huge increase during the last couple of years. Transformerless PV inverters are gaining more share of the total inverter market, due to their high conversion efficiency, small weight and size. Nevertheless safety should have an important role in case of these tranformerless systems, due to the missing galvanic isolation. Leakage and fault current measurement is a key issue for these inverter topologies to be able to comply with the required safety standards. This article presents the test results of two different current measurement sensors that were suggested to be used in commercial PV inverters for the measurement of leakage and fault ground currents. The German VDE0126–1–1 standard gives the limit for fault and leakage ground currents and all grid connected PV inverters have to comply with these limits and disconnect from the grid in case of a fault.

ISBN:

9781467316507

Type:

Conference paper

Language:

English

Published in:

Proceedings of the International Conference on Optimization of Electrical and Electronic Equipments, Optim, 2012, p. 887-892

Main Research Area:

Science/technology

Publication Status:

Published

Series:

Optimization of Electrical and Electronic Equipment (optim), Proceedings

Review type:

Peer Review

Conference:

13th International Conference on Optimization of Electrical and Electronic Equipment, 2012

Publisher:

IEEE

Submission year:

2012

Scientific Level:

Scientific

ID:

2182140340

Leakage current measurement in transformerless PV inverters

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