Design protection circuit for transformerless photovoltaic inverters in harsh climatic conditions

Alzoubi, Muh'd I., Maung Than Oo, Amanullah and Azad, Salahuddin 2013, Design protection circuit for transformerless photovoltaic inverters in harsh climatic conditions, in Asia PES 2013 : Proceedings of the IASTED Power and Energy Systems 2013 international conference, ACTA Press, Calgary, Canada, pp. 42-48, doi: 10.2316/P.2013.800-051.

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Title Design protection circuit for transformerless photovoltaic inverters in harsh climatic conditions
Author(s) Alzoubi, Muh'd I.
Maung Than Oo, AmanullahORCID iD for Maung Than Oo, Amanullah orcid.org/0000-0002-6914-2272
Azad, Salahuddin
Conference name Power and Energy Systems. International Conference (6th : 2013 : Phuket, Thailand)
Conference location Phuket, Thailand
Conference dates 10 - 12 Apr. 2013
Title of proceedings Asia PES 2013 : Proceedings of the IASTED Power and Energy Systems 2013 international conference
Editor(s) Kaitwanidvilai, S.
Publication date 2013
Conference series Power and Energy Systems International Conference
Start page 42
End page 48
Total pages 7
Publisher ACTA Press
Place of publication Calgary, Canada
Keyword(s) photovoltaic
transformerless inverter
leakage current
insulation resistance
Summary Transformerless inverters technology in photovoltaic systems offers many advantages, but there are some safety issues due to the solar panel parasitic capacitance. The parasitic capacitance value depends on many factors such as PV panels and frame structure, surface of the cells, distance between the cells, module frame, weather conditions (e.g., humidity) and the amount of dust covering the PV panel. Harsh climate like the one in the Central Queensland region is characterized by high temperature, high relative humidity. Due to the region’s high dew point, high humidity and heavy rain during the wet season, the water condensed over the PV array surface will affect the stray capacitance significantly and consequently, the system leakage current. Human safety in PV system is a key issue, which must be addressed when this technology is applied. Protection against electrical shock is essential while deploying such systems to avoid injury or loss of life. Furthermore, PV insulation varies with meteorological conditions such as, temperatures, humidity. Therefore, the protective circuit should have the capability to adapt to any changes in metrological variables. This paper explorers the effect of meteorological changes on the insulation parameters and leakage capacitance and design a tools for protection.
ISBN 0889869596
9780889869592
Language eng
DOI 10.2316/P.2013.800-051
Field of Research 090607 Power and Energy Systems Engineering (excl Renewable Power)
080503 Networking and Communications
Socio Economic Objective 850504 Solar-Photovoltaic Energy
HERDC Research category E1.1 Full written paper - refereed
Persistent URL http://hdl.handle.net/10536/DRO/DU:30063354

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