The invention discloses a photovoltaic energy storage charging system adopting a direct current bus, and belongs to the technical field of photovoltaic energy supply. Comprising a plurality of photovoltaic assemblies which are connected with a photovoltaic combiner box, the photovoltaic combiner box is connected with a photovoltaic DCDC converter, the photovoltaic DCDC converter is connected with an energy storage converter, the energy storage converter is connected with an energy storage battery ESS system and a DC charging pile, and the energy storage converter, the energy storage battery ESS system, the photovoltaic DCDC converter and the DC charging pile are all connected with an EMS energy management system. And when the photovoltaic module stops working and the energy storage system is lack of power, the energy storage converter charges the energy storage system. When an external network fails and is powered off, the alternating current inlet wire knife switch is automatically switched off, power is supplied to the second power box after inversion of the bidirectional PCS, and power is supplied to the control cabinet power supply.
本发明的一种采用直流母线的光伏储能充电系统,属于光伏供能技术领域。包括若干个光伏组件与光伏汇流箱连接,光伏汇流箱连接光伏DCDC变流器,光伏DCDC变流器连接有储能变流器,储能变流器连接有储能电池ESS系统和直流DCDC充电桩,储能变流器、储能电池ESS系统、光伏DCDC变流器和直流DCDC充电桩均连接EMS能量管理系统。当光伏组件停止工作且储能系统亏电时候,储能变流器给储能系统充电。当外网故障停电,自动断开交流进线闸刀,通过双向PCS逆变后给电源箱二供电,且给控制柜电源供电。
Photovoltaic energy storage system adopting direct current bus
一种采用直流母线的光伏储能系统
2023-07-11
Patent
Electronic Resource
Chinese
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