AUTOMATIC GENERATION AND ANALYSIS OF SOLAR CELL IV CURVES

摘要

A photovoltaic system includes multiple strings of solar panels and a device presenting a DC load to the strings of solar panels. Output currents of the strings of solar panels may be sensed (502) and provided to a computer that generates current-voltage (IV) curves of the strings of solar panels (503). Output voltages of the string of solar panels may be sensed (501) at the string or at the device presenting the DC load. The DC load may be varied. Output currents of the strings of solar panels responsive to the variation of the DC load are sensed to generate IV curves of the strings of solar panels (503). IV curves may be compared and analyzed to evaluate performance (504) of and detect problems (505) with a string of solar panels.