| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a photovoltaic power generation system, making MPPT control of low power consumption through a simple structure by requiring no CPU control. <P>SOLUTION: The photovoltaic power generation system has a first solar cell and a second solar cell having same characteristics, and stores power generated using the first solar cell to a secondary battery, through a MPPT control circuit for maximizing generated power of the first cell. The MPPT control circuit has: a reference voltage setting means for setting an output voltage of the second solar cell to a power maximum point voltage, based on proportional information indicative of a proportion of the power maximum point voltage, in which generated power becomes maximum, to an open end voltage, in the first and second solar cells, and the open end voltage and the proportional information of the second solar cell; and a charging voltage regulating means for regulating the output voltage of the first solar cell to the power maximum point voltage, by comparing the power maximum point voltage of the second solar cell set by the reference voltage setting means, with the output voltage of the first solar cell. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
