PHOTOVOLTAIC POWER GENERATION SYSTEM

• Main Authors: ENDO TOMOKO, NAKAICHI JUN, ERICA MARTIN, OGURA RYO, BAI DING HU, UCHIDA TSUYOSHI, TAKEYAMA TAKAHIRO
• Format: Patent
• Language: English; Japanese
• Published: 01.09.2023
• 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; GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRA-REDRADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, E.G. USINGPHOTOVOLTAIC [PV] MODULES; SYSTEMS FOR STORING ELECTRIC ENERGY

To provide a photovoltaic power generation system capable of achieving both reduction in installation cost of breaker devices and improvement in safety.SOLUTION: A photovoltaic power generation system 1 comprises a string 2, an inverter 3, a first breaker device 4, and a second breaker device 5. The string 2 includes a plurality of solar battery module groups. The first breaker device 4 disconnects the plurality of solar battery module groups on a first cable way from each other depending on a first control signal. The second breaker device 5 is driven by a power supplied from the first breaker device 4, and disconnects the plurality of solar battery module groups on a second cable way from each other depending on a second control signal. The first breaker device 4 has a first switching part 44a. The first switching part 44a has: a first opening/closing part 61a; and a first semiconductor switching element 63a connected in parallel with the first opening/closing part 61a. The first semiconductor switching element 63a is controlled to be in an ON state before an opening/closing operation of the first opening/closing part 61a.SELECTED DRAWING: Figure 5 【課題】遮断装置の設置コストの低減、及び安定性の向上を両立できる太陽光発電システムを提供する。【解決手段】太陽光発電システム１は、ストリング２と、インバータ３と、第１遮断装置４と、第２遮断装置５とを備える。ストリング２は、複数の太陽電池モジュールグループを含む。第１遮断装置４は、第１遮断装置４は、第１制御信号に応じて第１電路の複数の太陽電池モジュールグループを遮断する。第２遮断装置５は、第１遮断装置４から供給される電力によって駆動し、第２制御信号に応じて第２電路の複数の太陽電池モジュールグループ間の接続を遮断する。第１遮断装置４は第１スイッチング部４４ａを有し、第１スイッチング部４４ａは、第１開閉部６１ａと、第１開閉部６１ａに並列接続される第１半導体スイッチング素子６３ａと、を有し、第１半導体スイッチング素子６３ａは、第１開閉部６１ａの開閉動作前にＯＮ状態となる。【選択図】図５