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Publications (3)0 Total impact

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    ABSTRACT: Photovoltaic (PV) cells and modules are often rated in terms of a set of standard reporting conditions defined by a temperature, spectral irradiance and total irradiance. Because PV devices operate over a wide range of temperatures and irradiances, the temperature and irradiance-related behavior must be known. This paper surveys the temperature dependence of crystalline and thin-film, state-of-the-art, research-size cells, modules and systems measured by a variety of methods. The various error sources and measurement methods that contribute to cause differences in the temperature coefficient for a given cell or module measured with various methods are discussed
    Photovoltaic Specialists Conference, 1996., Conference Record of the Twenty Fifth IEEE; 06/1996
  • J. Burdick, J. Pruett, E. Beck
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    ABSTRACT: The results of the first complete module qualification testing performed on the photovoltaic (PV) modules of several different manufacturers and a variety of technologies are presented here. Both thin-film and crystalline PV modules are being evaluated. The National Renewable Energy Laboratory (NREL) now has the capability to perform the tests in the proposed IEEE PV module qualification test sequence. Each test performed is discussed. In addition, the authors have developed new test methods and improved techniques as well as engineering solutions to problems encountered with some of the present test procedures. This work not only demonstrates NREL's continuing commitment to work and interact with PV manufacturers to improve their modules from both a performance and a reliability standpoint, but also shows the ongoing effort to validate ASTM test methods and IEEE qualification testing procedures. Finally, this research establishes a basis from which further studies of the correlation between indoor, accelerated testing and outdoor, real-world exposure can be made, with the hope of eventually predicting long-term PV module service lifetimes in the field
    Photovoltaic Energy Conversion, 1994., Conference Record of the Twenty Fourth. IEEE Photovoltaic Specialists Conference - 1994, 1994 IEEE First World Conference on; 01/1995
  • L. Mrig, J. Burdick, W. Luft, B. Kroposki
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    ABSTRACT: The National Renewable Energy Laboratory (NREL) has been testing amorphous silicon (a-Si) photovoltaic (PV) modules for more than a decade. NREL has been conducting controlled light-soak testing of multijunction a-Si modules to characterize their performance for stability evaluation as well as to benchmark the technology status. Some of the test modules, after controlled light-soak testing, have been installed outdoors. The authors have observed that under outdoor exposure, the modules further degrade in performance, possibly due to lower outdoor temperatures and varying spectra. The paper presents data on the light-induced degradation for the third controlled light-soak test on multijunction a-Si modules as well as outdoor performance data on single- and multijunction modules under prevailing conditions
    Photovoltaic Energy Conversion, 1994., Conference Record of the Twenty Fourth. IEEE Photovoltaic Specialists Conference - 1994, 1994 IEEE First World Conference on; 01/1995