Print Email Facebook Twitter Interlaboratory comparison of angular-dependent photovoltaic device measurements Title Interlaboratory comparison of angular-dependent photovoltaic device measurements: results and impact on energy rating Author Riedel-Lyngskær, N. Santamaría Lancia, A.A. Plag, F. Kröger, I. Vogt, M.R. Schinke, C. Davidsen, R.S. Amdemeskel, M. Jansen, M.J. Manshanden, P. Slooff-Hoek, L.H. Carr, A.J. Bliss, M. Betts, T. Mayo, M.E. Jauregui, I.P. Balenzategui, J.L Roldan, R. Bellenda, G. Caccivio, M. Kräling, U. Neuberger, F. Zirzow, D. Crimmins, J. Robinson, C. King, B. Teasdale, W. Kedir, C. Watts, J. Desharnais, R. Poulsen, P.B. Jakobsen, M.L. dos Reis Benatto, G.A. Publication year 2020 Abstract This paper presents the results from an extensive interlaboratory comparison of angular-dependent measurements on encapsulated photovoltaic (PV) cells. Twelve international laboratories measure the incident angle modifier of two unique PV devices. The absolute measurement agreement is ±2.0% to the weighted mean for angles of incidence (AOI) < 65 degrees, but from 70 degrees to 85 degrees, the range of measurement deviations increases rapidly from 2.5% to 23%. The proficiency of the measurements is analysed using the expanded uncertainties published by seven of the laboratories, and it is found that most of the angular-dependent measurements are reproducible for AOI < 80 degrees. However, at 85 degrees one laboratory's measurement does not agree to the weighted mean within the stated uncertainty, and measurement uncertainty as high as 16% is needed for the laboratories without uncertainty to be comparable. The poor agreement obtained at 85 degrees indicates that the PV community should place minimal reliance on angular-dependent measurements made at this extreme angle until improvements can be demonstrated. The cloud-based Daidalos ray tracing model is used to simulate the angular-dependent losses of the mono-Si device, and it is found that the simulation agrees to the median measurement within 0,6% for AOI < 70 degrees and within 1.4% for AOU < 80 degrees. Finally, the impact that the angular-dependent measurement deviations have on climate specific energy rating (CSER) is evaluated for the six climates described in the IEC 61853-4 standard. When one outlier measurement is excluded, the angular-dependent measurements reported in this work cause a 1.0% - 1.8% range in CSER and a 1.0% - 1.5% range in annual energy yield, depending on the climate. Subject Angle of incidenceAngular-dependent lossesDiffuse irradianceEnergy ratingIncidence angle modifierInterlaboratory comparisonOptical lossesRelative transmittanceHigh Tech Systems & MaterialsIndustrial Innovation To reference this document use: http://resolver.tudelft.nl/uuid:4859377a-2d0c-4c3d-898e-970d1cca8094 TNO identifier 884813 Publisher Wiley, New York, NY, USA Source Progress in photovoltaics, 1-19 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.