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QuickSun®
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Product database
In order to be able to measure and perform e.g. correction and efficiency calculations the system has to be given first product related data. This data is saved in Product Database as shown in picture 1, and it includes e.g. temperature correction coefficients, dimensions and estimated electrical characteristics.
Before a measurement, the product is to be selected from a list. QuickSun software automatically uses the defined parameters for selecting optimal measurement scales and for calculating temperature and irradiance corrections with the following equations in formula 2.
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Series Resistance Measurement
QuickSun software can measure the series resistance of a module or a cell using the method of the standard IEC 60891. The measurement includes the I/V curve recording at three irradiance levels as demonstrated in picture 3.
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Monitor Cell Calibration
In the QuickSun solar simulators the irradiance signal is measured with a monitor cell. The cell is made of crystalline silicon and its gain (~25 mV @ 1000 W/m2) is pre calibrated at Endeas Oy. Because of not identical geometrical and spectral response conditions at customer's site the gain is to be in addition fine calibrated with certified reference cells/modules representing typical products which are manufactured. The certified short circuit current of the reference modules/cells is used as a calibration value. It is possible to fine calibrate the system with several kinds of modules/cells and save the calibration factors for later use. The screen shot copy in picture 4 shows the Monitor Cell Calibration window.
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Flash Trace
The shape of the flash pulse can be measured using the Flash trace function of the QuickSun software like shown in picture 5. This is especially useful for measuring the peak flash intensity when monitoring the aging of the flash lamp. As the lamp ages, the flash peak intensity drops. When the peak intensity has dropped a certain amount, it is time to change the tube.
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