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: 15.11.2023
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; 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 breaking devices and improvement in stability, in a photovoltaic power generation system.SOLUTION: A photovoltaic power generation system comprises a string, an inverter, and a plurality of breaking devices. The string includes a plurality of solar battery module groups. The plurality of breaking devices disconnect between the plurality of solar battery module groups in response to a control signal from the inverter. The plurality of solar battery module groups include a first group, a second group connected with the first group, and a third group connected with the second group. The plurality of breaking devices include a first breaking device. The first breaking device includes a first switching part connected with an anode side terminal of the second group. The first switching part includes a first opening/closing part, and a first semiconductor switching element connected in parallel to the first opening/closing part. The first semiconductor switching element is turned ON before an opening/closing operation of the first opening/closing part.SELECTED DRAWING: Figure 1 【課題】太陽光発電システムにおいて、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は、ストリングと、インバータと、複数の遮断装置と、とを備える。ストリングは、複数の太陽電池モジュールグループを含む。複数の遮断装置は、インバータからの制御信号に応じて複数の太陽電池モジュールグループ同士の接続を遮断する。複数の太陽電池モジュールグループは、第１グループと、第１グループに接続される第２グループと、第２グループに接続される第３グループとを含む。複数の遮断装置は、第１遮断装置を含む。第１遮断装置は、第２グループの陽極側の端子に接続される第１スイッチング部を含む。第１スイッチング部は、第１開閉部と、第１開閉部に並列接続される第１半導体スイッチング素子とを含む。第１半導体スイッチング素子は、第１開閉部の開閉動作前にＯＮ状態となる。【選択図】図１