PHOTOVOLTAIC POWER GENERATION SYSTEM, CONTROL METHOD, PROGRAM AND CONTROLLER OF THE SAME

To enhance recovery efficiency or availability of generation power at a weak power area and increase power conversion efficiency and achieve a high output the system by separating a generation power of a wide range obtained from a power generator of a photovoltaic power generation system into a generation power equal to or more than a threshold value and a generation power less than the threshold value.SOLUTION: A photovoltaic power generation system includes: two or more power generators (power generation panel 4) generating power depending on an amount of solar radiation; two or more power separation parts (6-1, 6-2, 6-3) separating generation power of each power generator into generation power equal to or more than a threshold value and a generation power less than the threshold value; power recovery parts (8, 9) which aggregates the generation power less than the threshold value separated at the power separation parts and recovers them; two or more first power conversion parts (power conditioners 12-1, 12-2, 12-3) which convert the generation power equal to or more than the threshold value; and second power conversion parts (power conditioners 13, 15) which convert the generation power less than the threshold value recovered by the power recovery parts.SELECTED DRAWING: Figure 1 【課題】太陽光発電システムの発電装置から得られる広域の発電電力から閾値以上の発電電力と閾値未満の発電電力とに分離することにより、微弱電力域の発電電力の回収効率ないし利用率を高め、電力変換効率を高め、システムの高出力化を図る。【解決手段】日照量に応じて発電する二以上の発電装置（発電パネル４）と、各発電装置の発電電力を閾値以上の発電電力と、閾値未満の発電電力とに分離する二以上の電力分離部（６－１、６－２、６－３）と、前記電力分離部で分離された前記閾値未満の発電電力を合算し回収する電力回収部（８、９）と、閾値以上の前記発電電力を電力変換する二以上の第一電力変換部（パワーコンディショナ１２－１、１２－２、１２－３）と、前記電力回収部に回収された前記閾値未満の発電電力を電力変換する第二電力変換部（パワーコンディショナ１３、１５）とを含んでいる。【選択図】 図１