The results of the second World Photovoltaic Scale recalibration

Winter, S.; Metzdorf, J.; Emery, Keith; Fabero, F.; Hishikawa, Yoshihiro; Hund, B.; Müllejans, Harald; Sperling, Armin; Warta, Wilhelm

doi:10.1109/pvsc.2005.1488304

Cited by 14 publications

(8 citation statements)

References 3 publications

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“…These results represent an important element to assess the calibration equivalence among laboratories. The aforementioned spread results for Top and Bottom cells are in agreement with previously published calibration round robin results both for c-Si modules [10,11], laying in the ±3% range, and cell [12,13] where the best agreement is in the ±1% range. Moreover, the I sc calibration exercise results are an experimental confirmation of previously performed simulations on the results of the first spectroradiometers comparison campaign [3].…”

Section: Conclusion and Discussionsupporting

confidence: 91%

Second international spectroradiometer intercomparison: results and impact on PV device calibration

Galleano

Zaaiman

Strati

et al. 2014

Progress in Photovoltaics

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This paper describes the results of an intercomparison of spectroradiometers for measuring global normal incidence and direct normal incidence spectral irradiance in the visible and in the near infrared, together with an assessment of the impact these results may have on the calibration of the short circuit current (I sc ) of triple-junction photovoltaic devices and on the relevant spectral mismatch calculation. The intercomparison was conducted by six European scientific laboratories and a Japanese industrial partner. Seven spectroradiometer systems, for a total of 13 different instruments/channels using two different technologies and made by four different manufacturers were involved. This group of systems represents a good cross section of the instrumentation for solar spectrum measurements available to date. The instruments were calibrated by each partner prior to the intercomparison following their usual procedure and traceability route in order to verify the entire measurement and traceability chain. The difference in measured spectral irradiance showed to have an impact on the calibration of a set of Iso-Type cells varying from ±2% to ±14% for middle and bottom cell, respectively.

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Section: Conclusion and Discussionsupporting

confidence: 91%

Second international spectroradiometer intercomparison: results and impact on PV device calibration

Galleano

Zaaiman

Strati

et al. 2014

Progress in Photovoltaics

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“…[17][18][19][20][21][22][23][24][25] The World Photovoltaic Scale (WPVS) itself, which nowadays has become a sort of alias to refer to a solar cell with some standardised package, was in fact established in 1999 as measurement scale for PV starting from a dedicated world-wide intercomparison on calibration of PV cells. [26][27][28] Similar measurement comparisons are less numerous and less geographically wide in the case of MJ PV devices. 21,[29][30][31] Also, a large part of those available is mainly related to concentrated PV (with reference to a total irradiance larger than 1000 W/m 2 ).…”

Section: Introductionmentioning

confidence: 99%

A European proficiency test on thin‐film tandem photovoltaic devices

Salis

Gerber

Andreasen

et al. 2020

Progress in Photovoltaics

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A round-robin proficiency test (RR PT) on thin-film multi-junction (MJ) photovoltaic (PV) cells was run between 13 laboratories within the European project CHEETAH. Five encapsulated PV cells were circulated to participants for being tested at Standard Test Conditions (STC). Three cells were a-Si/μc-Si tandem PV devices, each of which had a different short-circuit current ratio between the top junction and the bottom one; the remaining two cells were single-junction PV devices made with material representative of the individual junctions in the MJ cells. The RR PT's main purpose was to assess the capability of the participating laboratories, in terms of employed facilities and procedures, to test MJ PV devices. Therefore, participants

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“…However, every method, every correction procedure and each individual facility lead to different measurement uncertainties, which have to be identified and quantified in order to assign the correct measurement uncertainty to the CV of the PV device under test (DUT). In order to validate calibration facilities, intercomparison campaigns are performed to compare CVs of a common unknown set of PV devices [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Results of the round robin calibration of reference solar cells within the PhotoClass project

Kröger

Friedrich

Winter

et al. 2018

Int. J. Metrol. Qual. Eng.

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An intercomparison of terrestrial photovoltaic (PV) calibrations was performed among a number of European calibration and testing laboratories that participated in the European Metrology Research Program (EMRP) project “PhotoClass”. The purpose of this intercomparison was to evaluate the comparability of calibration and testing services within the stated uncertainties of the individual laboratories. The calibration objects were two world photovoltaic scale (WPVS)-type reference solar cells, one made from crystalline silicon and one made from GaAs. The calibration value (CV) was the short-circuit current under standard test conditions (ISTC). In conclusion, it was found that the CVs are all consistent within the stated uncertainties. This result strengthens the reliance in the calibration chain and in the PV calibration infrastructure in Europe.

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The results of the second World Photovoltaic Scale recalibration

Cited by 14 publications

References 3 publications

Second international spectroradiometer intercomparison: results and impact on PV device calibration

Second international spectroradiometer intercomparison: results and impact on PV device calibration

A European proficiency test on thin‐film tandem photovoltaic devices

Results of the round robin calibration of reference solar cells within the PhotoClass project

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