The invention discloses an isolated floating photovoltaic power generation system, and belongs to the technical field of photovoltaic power generation. The photovoltaic modules are not directly connected in series to form a string, but one or more photovoltaic modules are firstly connected to an isolation type photovoltaic controller with maximum power point tracking and electrical isolation functions, then all the isolation type photovoltaic controllers are connected in series to form a high-voltage string, and after the high-voltage string is connected to an inverter of a corresponding voltage level, an inverted alternating current is connected into a power grid, so that no matter how many isolated photovoltaic controllers are connected in series, the voltage to ground at the input side of each isolated photovoltaic controller cannot be accumulated, the higher string direct-current voltage can be achieved; no matter how many photovoltaic modules are contained in a string, the current mismatch between the photovoltaic modules is also eliminated by the controllers; meanwhile, by using the isolated photovoltaic controllers, the efficiency of the photovoltaic system can be improved, and the BOS cost of a power station can be greatly reduced.
本发明公开的一种隔离型漂浮式光伏发电系统,属于光伏发电技术领域。光伏组件不直接串联形成组串,而是由一个或多个光伏组件先接入一个具有最大功率点追踪和电气隔离功能的隔离型光伏控制器,然后所有的隔离型光伏控制器再串联形成高压组串,高压组串接入相应电压等级的逆变器后,逆变为交流电并入电网。这样无论串联多少隔离型光伏控制器,每一隔离型光伏控制器输入侧的对地电压是不会累积的,因此可实现较高组串直流电压,因此无论组串中包含多少光伏组件,光伏组件间的电流失配也将被控制器消除;同时,使用隔离型光伏控制器,能够提高光伏系统效率并大幅降低电站BOS成本。
Isolated floating photovoltaic power generation system
一种隔离型漂浮式光伏发电系统
2021-10-15
Patent
Electronic Resource
Chinese
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / H05K PRINTED CIRCUITS , Gedruckte Schaltungen |
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