METHODS OF MEASURING AND EVALUATING POWER LOSSES IN SOLAR CELL, SOLAR MODULE, AND SOLAR FACILITIES BY MEANS OF PHOTOGRAPHIC LUMINESCENCE AND THERMOGRAPHY MEASUREMENTS

摘要

the invention concerns a procedure for controlling the quality of a solar cell having the following steps:in a solar cell, a first voltage (v1) is less than or equal to zero, and the emitted light to the solar cell in a first image photographed in order to obtain;in the solar cell is preferably a second voltage (v2) is greater than zero, and the emitted light into the solar cell to a second image photographing, etc.in the solar cell, a third voltage (v3) is greater than zero and less than the second voltage is created and the emitted light of the solar cell to a third photographed picture;the solar cell to a fourth voltage (v4) is greater than the second and / or third voltage is created and the emitted light is photographed by the solar cell, a fourth picture;it is either a first difference (d1) between the pixelwerten the photographs in the first and the second voltage is formed.- there is a second difference (d2) between the images of the third and fourth voltage is formed.it is the ratio between the first and second difference is formed.or the voltage v2 corresponding to the point of maximum leistungsentnahme,and it is the first voltage (v1), the image of the image to the second voltage (v2) pixelweise off a first differenzbild (d1).it is the average value m of all pixels that differenzbilds formed;it is the image of the third voltage (v3) of the image to the fourth voltage (v4) pixelweise off for a second differenzbild (d2).- the values of the second differenzbildes divided by the calculated mean value, so that a figure, to obtain quantitatively the inhomogeneity of the leistungsdissipation represents.instead of lumineszenzbilder are thermografiebilder v3 and v4 with the tensions and a differenzbild formed.