| 摘要 |
<p>In a control device (5) for controlling a power conversion apparatus (6), a voltage changing unit (11) changes the output voltage of a photovoltaic power generation apparatus (1) by a ∆V for each period of time (∆t), and a voltage searching unit (12) calculates the amount of change in power generation (P2-P1) before and after the change in order to search for an output voltage wherein the amount of power generation by the photovoltaic power generation apparatus (1) becomes maximum. Furthermore, a power change detection unit (13) provides a voltage-fixed period (∆T) during which the voltage is maintained at a fixed value for a period of time that is longer than the period of time (∆t) in order to detect changes in the amount of power generation due to changes in the amount of solar radiation, and a correction unit (14) calculates the amount of power generation due to changes in the amount of solar radiation for each of the periods of time (∆t), as correction values, in order to correct the amount of change in power generation (P2-P1) for each of the periods of time (∆t), thereby obtaining the amount of change in power generation (∆P) due to only the change in the output voltage.</p> |
