NDLI: Analytical techniques used to determine chemical degradation of polymeric materials used in PV modules after sustained exposure to partial discharge voltages

Content Provider	IEEE Xplore Digital Library
Author	Phillips, N.H. Givot, B. O'Brien, B. Korba, G. Loyd, J.
Copyright Year	2012
Description	Author affiliation: 3M Company, Austin, Texas, USA (Loyd, J.) \|\| 3M Company, St. Paul, Minnesota, USA (Phillips, N.H.; Givot, B.; O'Brien, B.; Korba, G.)
Abstract	Partial Discharge is one of a number of tests defined in IEC61730-2, which specifies properties of photovoltaic modules and components to assure safe electrical operation during their expected lifetimes. From the perspective of backsheet/ frontsheet designers and developers, the test is of practical importance because of the criteria it places on material choice and film thickness. Our objective is to study the chemistry of electrically induced degradation of PV front/backsheet materials, in order to improve the linkage of the partial discharge test with electrical safety. We have used ESCA to determine extent of chemical degradation of several polymeric films after exposure to voltage greater than V for 24 hours; we've shown that degradation occurs in the annulus of the electrode, presumably at the distance given by the Paschen's law minimum. The relative rates of degradation in decreasing order are polypropylene > PET > THV, with no measurable degradation to the THV film.
Starting Page	000714
Ending Page	000719
File Size	1805114
Page Count	6
File Format	PDF
ISBN	9781467300643
ISSN	01608371
e-ISBN	9781467300667
DOI	10.1109/PVSC.2012.6317613
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Positron emission tomography Films Polymers Voltage measurement Indexes Photovoltaic systems polymeric films backsheets dielectric films partial discharge photovoltaic cells
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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