| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optimum point tracking type photovoltaic power generation device capable of effectively taking solar cell power without impairing a power generating opportunity by an erroneous determination in a conventional MPPT method. <P>SOLUTION: This photovoltaic power generation device comprises a solar cell 2; a system-linked inverter 1 for converting its power to AC; and a boost control circuit 6 that is a control means for tracking the maximum output point of the solar cell 2 while periodically changing the working voltage of the solar cell output to be inputted to the inverter. The boost control circuit 6 determines the increasing/decreasing quantity of working voltage change in the next period according to the difference between the working voltage of the initial or previous solar cell output and the working voltage in this period. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
