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Title: Review of PV module performance at DOE/MIT Lincoln Laboratory test sites during the period 1977-1982

Conference · · Conf. Rec. IEEE Photovoltaic Spec. Conf.; (United States)
OSTI ID:5379152

During the years 1977-1982, MIT Lincoln Laboratory (LL) placed over 11,000 photovoltaic (PV) modules at experimental PV power generating systems in a number of field test sites in the United States. Prominent among these are a 100-kW system at Natural Bridges National Monument in Utah, a 25-kWp system at Mead, Nebraska, and a 15-kW system at Bryan, Ohio. The modules used in each of these systems were procured through the Jet Propulsion Laboratory's Large Scale Procurement Program as part of the U. S. Department of Energy's National Photovoltaic Program. Through a program of periodic surveillance, measurements, and inspections at the aforementioned sites, electrically failed modules were located, removed and analyzed during this six year period. The principal causes of failure were: cells cracked due to weathering or internal module stresses, failed solder joints, interconnects not soldered to rear sides of cells at assembly, cells or interconnects electrically shorted to metallic substrates, and broken or split interconnects. Details and photographs of many of the different types of failures are presented and some of the analysis techniques used to locate the failures are described.

Research Organization:
Massachusetts Institute of Technology, Lincoln Laboratory, Lexington, Massachusetts 02173
OSTI ID:
5379152
Report Number(s):
CONF-820906-
Journal Information:
Conf. Rec. IEEE Photovoltaic Spec. Conf.; (United States), Conference: 16. IEEE photovoltaics specialists conference, San Diego, CA, USA, 28 Sep 1982
Country of Publication:
United States
Language:
English