Solar power generation system

• Main Authors: Ogura, Ryo, Endo, Tomoko, Uchida, Tsuyoshi, Nakaichi, Jun, Martin, Erica, Baik, Jeongho, Takeyama, Takahiro
• Format: Patent
• Language: English
• Published: 01.10.2024
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRA-REDRADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, E.G. USINGPHOTOVOLTAIC [PV] MODULES

A solar power generation system includes a string, an inverter, and a plurality of shut-off devices. The string includes a plurality of solar cell module groups. The plurality of shut-off devices is configured to cut off a connection between the plurality of solar cell module groups in response to a control signal from the inverter. The plurality of solar cell module groups includes a first group, a second group connected to the first group, and a third group connected to the second group. The plurality of shut-off devices includes a first shut-off device. The first shut-off device includes a first switching unit connected to an anode-side terminal of the second group. The first switching unit includes a first open-close unit and a first semiconductor switching device connected in parallel with the first open-close unit. The first semiconductor switching device is turned ON before the first open-close unit is operated.