| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a photovoltaic power generation system in which power extraction efficiency is improved in the case where maximum output operation voltages of solar cell modules are different, and it is not necessary to install a measuring instrument or the like for each solar cell module. <P>SOLUTION: A photovoltaic power generation system comprises a plurality of solar cell modules 11, first and second DC/DC converters 31 and 32, a common power line 16, a main power line 14, a sub power line 15, a plurality of diode elements, a plurality of switching elements, an electronic load device 33 for measuring voltage/current characteristics of solar cell modules, and a control device 34. An array maximum output operation voltage in the case of connecting in parallel all the plurality of solar cell modules is detected by the control device, power differentiation values in the vicinity of the array maximum output operation voltage are acquired successively by the electronic load device connected to the sub power line, and a group of modules with high maximum output operation voltage values and a group of modules with low maximum output operation voltage values are determined on the basis of the power differentiation values. <P>COPYRIGHT: (C)2013,JPO&INPIT |
