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Highly Accurate Irradiation and Temperature Control for Next-Generation PV Module Characterisation
A. van der Heide, J. Govaerts, J.A. Tsanakas, M. Aleman, N. Harder, E. Voroshazi
Solar Simulator, LED, Characterisation, Characterization
Photovoltaic Modules and BoS Components
Subtopic: PV Module Design, Manufacture, Performance and Reliability
Event: 36th European Photovoltaic Solar Energy Conference and Exhibition
Session: 4AV.2.17
1153 - 1157
ISBN: 3-936338-60-4
Paper DOI: 10.4229/EUPVSEC20192019-4AV.2.17
0,00 EUR
Document(s): paper, poster


In this paper, an advanced module solar simulator based on LEDs as irradiation sources is described, and its performance concerning control of irradiation and temperature is measured. The spectral match to the standard AM1.5G spectrum is outstanding between 400 nm-1100 nm, with a maximum deviation in the spectral intervals <2%, where <25% is required for class A simulators, according to the IEC standard. The irradiance non-uniformity across a 1.6 m x 1 m area is currently 2.1%, which is just above the 2% limit for class A, but this can be improved by adjusting the LED beam directions slightly. The long-term irradiance instability is 0.09%, which is well below the 2% limit of class A. Since the high efficiency modules of today can still produce significant current below 400 nm and above 1100 nm, the updated IEC standard (expected by 2020) will extend the total spectral range to 300 nm-1200 nm for the new class A+. Introducing other LED types in future upgrades will enable the spectrum to be closely matching the AM1.5G spectrum also below 350 nm and above 1100 nm. Finally, actual module measurements at different temperature/irradiance combinations are presented to demonstrate the capabilities of the simulator.