CONTROL METHOD OF PHOTOVOLTAIC POWER GENERATION DEVICE

PROBLEM TO BE SOLVED: To provide a control method of a photovoltaic power generation device capable of maximize the amount of solar radiation at a panel face of a photovoltaic power generation panel.SOLUTION: The control method of the photovoltaic power generation device comprises processes of; obtaining direct solar radiation and diffuse solar radiation in fine weather based on a latitude and a longitude of a place where the photovoltaic power generation device is installed and a time and date; obtaining a maximum power generation tilt angle at which the sum of direct solar radiation and diffuse solar radiation expected from a power generation output amount at a photovoltaic power generation panel and direct power generation amount and diffuse power generation amount in fine weather is maximized; and generating and sending to a movable trestle a trestle control signal for setting a trestle tilt angle at the maximum power generation tilt angle.