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dc.contributor.authorCarigiet, Fabian-
dc.contributor.authorBrabec, Christoph J.-
dc.contributor.authorBaumgartner, Franz-
dc.description.abstractAnnual degradation rates of PV modules are important in the yield prediction. For a high-quality PV module, these rates are lower than the measurement uncertainty of a nominal power measurement performed in todays most advanced certified photovoltaic reference laboratory. Therefore, the analysis requires a well thought out methodology that can compare the data relative to each other or relative to an unused module stored in the dark on an annual base. Over the past 10 years, several multi c-Si and HIT modules have been accurately monitored in a string and single module setup by an outdoor performance measurement system. Additionally, all modules have been dismantled and measured using an indoor flasher measurement system once every year. With this unique measurement setup, the annual degradation rates of multi c-Si modules and HIT modules are quantified based on three different analysis methodologies. The multi c-Si modules showed an average annual degradation rate of 0.18% ± 0.06% and 0.29% ± 0.06% measured by the outdoor and indoor system, respectively. The indoor analysis of the HIT modules yielded an average annual degradation of 0.26% ± 0.05%. That corresponds to half of the degradation observed by the outdoor analysis method. Further evaluations of the performance ratio PR confirmed the results gained by the indoor methodology. The comparison of the standard PR with a temperaturecorrected PR’STC for both technologies showed that the benefit of the lower temperature coefficient of the HIT technology is eliminated by its worse low light behaviour.de_CH
dc.relation.ispartofRenewable and Sustainable Energy Reviewsde_CH
dc.subjectc-Si solar cellde_CH
dc.subjectOutdoor test fieldde_CH
dc.subjectSolar simulator measurementde_CH
dc.subjectOutdoor performance monitoringde_CH
dc.subjectPerformance ratiode_CH
dc.subjectDegradation ratede_CH
dc.subject.ddc621.3: Elektro-, Kommunikations-, Steuerungs- und Regelungstechnikde_CH
dc.titleLong-term power degradation analysis of crystalline silicon PV modules using indoor and outdoor measurement techniquesde_CH
dc.typeBeitrag in wissenschaftlicher Zeitschriftde_CH
zhaw.departementSchool of Engineeringde_CH
zhaw.organisationalunitInstitut für Energiesysteme und Fluid-Engineering (IEFE)de_CH
zhaw.publication.reviewPeer review (Publikation)de_CH
zhaw.webfeedErneuerbare Energiende_CH
Appears in collections:Publikationen School of Engineering

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