Patent ID: 9651631
Date: 2017-05-16
CPC Classifications: G01R,H02S,Y02E

Claim:
1. A solar power generation system comprising: a solar cell array formed by including plural solar cell strings each having plural solar cell modules connected in series and by connecting plural solar cell strings in parallel; a load change unit connected to the solar cell array; a current detection unit detecting an output current of the solar cell array; a voltage detection unit detecting an output voltage of the solar cell array; a control unit controlling an operating voltage of the solar cell array by outputting a control signal to the load change unit based on the output current and the output voltage; and a characteristic calculation unit calculating characteristics of the solar cell array, including series resistance of each of the solar cell modules, wherein the characteristic calculation unit wherein the characteristic calculation unit applies the short-circuit current, the open-circuit voltage, the operating voltage and the operating current at the given temperature to an expression indicating the characteristics of the solar cell module to perform said fitting calculation of the series resistance.