In order to get

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characteristic curves and characteristic parameters of solar cells

the software system for solar cell testing is developed using Visual C++ based on Windows operator system. The parameters matching in compensative

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testing circuit is analyzed in details. Analysis results show that series resistance and bridge DC power in the measurement circuit can slightly affect the dark

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curve

however

they modify the light

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curve significantly. The measurement data are basically agree with the standard data of solar cells by adjusting and optimizing the matching parameters and this error is only between 1% and 2%. The results show that this software system can meet the practical needs and also can provide accurate basis for the analysis of solar cells performances.