Programm Photovoltaik Ausgabe 2009 ... - Bundesamt für Energie BFE

Evaluation 2008 and prospects for 2009
During 2008 duties of maintenance and preservation of the accreditation ISO 17025 have been carried.
Weekly repeatability measurements and systematic calibration of the electronic devices have
continued. The Round Robin test has been interrupted because of the rupture of the reference module
during the measurement at TUV. A collaboration with different accredited laboratories to define a new
systematic Round Robin programme will be initiated in 2009. Reference modules of different technologies
will be tested.
In 2008 more than 6140 flashes were performed for research programmes (test centre and other projects),
I-V measurements for third-parties and maintenance measurements.
2009 will be an intense year. SUPSI will set up a new laboratory in a new location for lifetime mechanical
and security testing; covering IEC61215 and IEC61646 certification services. As a result,
SUPSI will provide a new accreditation system, independent of LTS.
The existing solar simulator will be moved to a new location. At the same, a spectrum radiometer and
filters for the Spectral Response (SR) will be installed on the new simulator in Trevano. Thus, measurement
tests for I-V in function of irradiance and STC measurements of Thin-Film modules will be
accredited. Currently, an automated system for the filter positioning in front of lamps is being developed.
The system with filters, devices and two modules for the uniformity measurement will be set in
motion in 2009. Following this, the new sun simulator functionality tests will be performed; effectuating
uniformity and light spectrum verifications. After a testing period, the new simulator will be installed in
the accreditation system ISO17025 for I-V measurements at STC.
Concerning the flash spectrum for the pulsed solar simulators monitoring, we opted for a solution proposed
from the collaboration of Ocean Optics (UK) and GMP (CH). The system is a composition of
two CCD spectroradiometers , sensitive in ranges 200-1100nm and 900-1700nm, respectively. This
solution leads to a better accuracy and wider wavelength range with respect to the case with a single
spectroradiometer of the same technology. Some technical issues still need to be resolved by the
manufacturer. In order to decrease spectral mismatch errors on thin-film measurement, 2 new filtered
c-Si reference cells with a-Si and CdTe spectral responses have been purchased at ISAAC.
A bias light measurement procedure for the maximum power determination of CI(G)S module at STC
was introduced at ISAAC.
In 2008 a new 15 months test cycle (no.11) began. The difficulty to retrieve the modules has not permitted
to start the new cycle as estimated, moreover during the ligtht soaking of 60 kWh/m² was snowing,
thus precluding the verification of the initial degradation (P0). During 2009 measurements of the
third module of every one of the 13 modules in exam and comparison with the energy rating will be
proceeded.
The new stands for the measurement of comparison of the Energy rating dedicated for prototype of
the industry will be finished and make available for the end of March 2009 for the long term ER measurements.
To be operative on time it was decided to move the old plant of 10 kWp (currently on building
B) in order to leave room for the new stands. Afterwards it will be reinstated on the new restored
roof of building A.
References
[1] D.Chianese et al.: Rapporto BfE finale „Centrale di test ISAAC-TISO: periodo VII – 2003-2007”, 2007.
[2] G. Friesen et al.: Rapporto BfE annuale 2008 „Performance, ISAAC activities”, n° 019718 EU: (SES6) – Integrated
project, dicembre 2008.
[3] D. Chianese, E. Burà, A. Realini: MPPT3000 multifunctional testing device for PV module, 23rd EPVSEC, Valencia
(S), September 2008.
[4] www.isaac.supsi.ch � ricerca � fotovoltaico.
[5] I. Pola et al.: Rapporto BfE annuale 2008 „Analysis of Annealing and Degradation effects on a-Si PV Modules”,
Centrale di test ISAAC-TISO, D. Chianese, SUPSI, DACD, ISAAC-TISO
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