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Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Hansastraße 27 c 80686 München, Germany http://www.fraunhofer.de
Contact Ms Anita Fricke +49 391 4090485
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Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

Modulbasiertes Sensorsystem erkennt Fehler in Photovoltaik-Großkraftwerken frühzeitig

Vorausschauende Wartung und Überwachung von PV-Anlagen

(PresseBox) (München, )
Bisherige Systeme überwachen PV-Großanlagen nicht auf Modulebene. Doch genau dort entstehen Fehler, die sich auf die Reihenschaltung mehrerer Solarmodule auswirken, also auf den kompletten String. Forschende des Fraunhofer-Instituts für Fabrikbetrieb und -automatisierung IFF entwickeln gemeinsam mit Partnern ein Sensorsystem, das detaillierte Einblicke bis auf Modulebene bietet und so Abweichungen, Verschmutzungen und Defekte unterschiedlichster Art frühzeitig erkennt.

Photovoltaik-Großkraftwerke bestehen oft aus Zehntausenden von Modulen und Komponenten. Beim Ausfall einzelner Solarmodule können intakte Bypassdioden einen starken Leistungseinbruch im String begrenzen; sind die Bypassdioden defekt, sinkt der Gesamtwirkungsgrad der verschalteten Solarmodulreihen (Strings) deutlich, mit wirtschaftlichen Verlusten, verminderten Erträgen und reduzierter Verfügbarkeit. Das Problem:
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