POWER CONVERSION SYSTEM, CONTROL METHOD OF CONVERSION CIRCUIT, AND PROGRAM

• Main Authors: MAEBA KOTA, FUJII HIROYUKI, HORIO WATARU, HANAMURA KENJI
• Format: Patent
• Language: English; Japanese
• Published: 23.01.2020
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

To perform a proper output suppression control using a conversion circuit 100 for various output suppression events.SOLUTION: A conversion circuit 100 includes an inverter 13. The conversion circuit 100 converts DC power output from a DC power source (a solar cell 2 and a power storage unit 3) via at least inverter 13, and output the power AC power to a load 5 or an electric power system (system 4). A control circuit 101 is configured so as to, when obtaining a piece of information that two or more output suppression events have occurred, control the conversion circuit 100 to output at maximum suppression in two or more suppression amounts according to the content of two or more output suppression events.SELECTED DRAWING: Figure 1 【課題】各種の出力抑制事由の発生に対して、変換回路１００において的確な出力抑制制御を行う。【解決手段】変換回路１００は、インバータ１３を含む。変換回路１００は、直流電源（太陽電池２及び蓄電部３）から出力される直流電力を少なくともインバータ１３において電力変換して交流電力として負荷５又は電力系統（系統４）に出力する。制御回路１０１は、２つ以上の出力抑制事由が発生したことを示す情報を得ると、２つ以上の出力抑制事由の内容に応じた２つ以上の抑制量のうち、最大の抑制量にて変換回路１００に出力抑制させる。【選択図】図１