Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Results of fielded module analysis and the development of accelerated module durability test protocols to better predict real-life performance
To better understand the performance and degradation mechanisms of photovoltaic modules in the service environment, we have inspected and characterized more than 60 global installations with more than 1.5 million modules (>200 MW) in Europe, Israel, China, Japan, India, Canada, and the United States. These inspections covered a range of installation types, climates, and ages ranging from newly commissioned to 30 years of operation. Modules were inspected and evaluated in the field and then selected modules were removed for further analysis in the laboratory. Both photovoltaic performance and failure analyses were done using a range of physical and chemical methods. This allowed characterization of failure modes and degradation, and provided critical guidance in the development of accelerated durability test protocols in order to better predict module performance and lifetime. The data and analysis from these fielded modules was used with environmental data to re-design single stress accelerated test protocols, including UV exposure and damp heat. Combined stress tests (simultaneous and sequential) were also designed and investigated to better match the service environment. These tests were then applied with modules using different materials and processing to understand the impact of materials and process changes, such as backsheet changes, on module performance. By comparing the results of these accelerated tests to the fielded modules we gained insights into the ability of these accelerated tests to predict field performance and the role of different materials in affecting module performance and reliability.
Results of fielded module analysis and the development of accelerated module durability test protocols to better predict real-life performance
To better understand the performance and degradation mechanisms of photovoltaic modules in the service environment, we have inspected and characterized more than 60 global installations with more than 1.5 million modules (>200 MW) in Europe, Israel, China, Japan, India, Canada, and the United States. These inspections covered a range of installation types, climates, and ages ranging from newly commissioned to 30 years of operation. Modules were inspected and evaluated in the field and then selected modules were removed for further analysis in the laboratory. Both photovoltaic performance and failure analyses were done using a range of physical and chemical methods. This allowed characterization of failure modes and degradation, and provided critical guidance in the development of accelerated durability test protocols in order to better predict module performance and lifetime. The data and analysis from these fielded modules was used with environmental data to re-design single stress accelerated test protocols, including UV exposure and damp heat. Combined stress tests (simultaneous and sequential) were also designed and investigated to better match the service environment. These tests were then applied with modules using different materials and processing to understand the impact of materials and process changes, such as backsheet changes, on module performance. By comparing the results of these accelerated tests to the fielded modules we gained insights into the ability of these accelerated tests to predict field performance and the role of different materials in affecting module performance and reliability.
Results of fielded module analysis and the development of accelerated module durability test protocols to better predict real-life performance
Gambogi, William (Autor:in) / Kopchick, James (Autor:in) / Felder, Thomas (Autor:in) / Heta, Yushi (Autor:in) / MacMaster, Steven (Autor:in) / Bradley, Alexander (Autor:in) / Hamzavy, Babak (Autor:in) / Yu, Bao-Ling (Autor:in) / Garreau-Iles, Lucie (Autor:in) / Hu, Hongjie (Autor:in)
2014
6 Seiten, Bilder, Tabellen, 11 Quellen
Aufsatz (Konferenz)
Datenträger
Englisch
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