Abstract
QS830A module solar simulator is applied to measure electrical parameters of standard PV modules based on mono/polycrystalline silicon solar cells, large format photovoltaic (PV) modules 150 cm x 220 cm, with effective measurements time of 2 ms / 4 ms, flush pulse duration 3 ms / 10 ms (one flash tube / two flash tubes), and non-uniformity less than 2%. In order to comply with the Class AAA tolerances of the standard IEC 60904-9 Edition 2.0 of QuickSun 830A simulators (Endeas Oy, Finland), proprietary optical system behind the light source filament has been developed for filtering spectrum and improving irradiance nonuniformity simultaneously. Non-uniformity parameter for 14% of total modules testing area, i.e. 0.65 m2, will be appointed in this work.
Highlights
Quick Sun 830A simulator, Endeas Oy, Finland, placed at University of Rzeszow was horizontally installed and instructions for constructing a corresponding flash tunnel were supplied with the simulators
In accordance with international standards for determining the parameter of the light intensity, in accordance with the generally accepted formula [5, 7–9] common for any type of module testers, we checked the correctness of calculations of the area we study: ΔEQS830A=( Emax QS – Emin QS)·100%/( Emax QS + Emin QS)
The system software analyzed result is the same as presented in Figure 2, equal to 2.67%. Both results are in very good agreement, but the condition of non-uniformity for QS830A class AAA solar module tester is not met, because it must be less than 2%
Summary
Quick Sun 830A simulator, Endeas Oy, Finland, placed at University of Rzeszow was horizontally installed and instructions for constructing a corresponding flash tunnel were supplied with the simulators. After changing the xenon flash lamp (light source) such tests must be obligatorily performed. Non-uniformity measurements, normally, must be provided minimum once per half year with testing at our Renewable Energy Sources laboratory at the Center for Innovation and Transfer of Natural Science and Engineering Knowledge of the University of Rzeszow (we are testing more than 300 modules per month). Uniformity tests were always provided after changing the flush tube. The goal of that research was to show that even if the condition for uniformity QS830A class A is not satisfied for whole testing area, we can distinguish a smaller area that meets class A requirements for inhomogeneity of light intensity, i.e. 2.28 m2, 2.20 m2, 1.14 m2, 0.65 m2. Measurements are made under standard test conditions (STC): 1000 W/m2, 25°C, AM1.5G presented in [3–6]
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