What is the principle of solar power

Add Time：2020/5/7    Views：299

Under the irradiation of sunlight, the electric energy generated by the solar cell element charges the battery through the control of the controller or directly supplies power to the load when the load demand is met. If the sunshine is insufficient or at night, the battery is under the control of the controller To supply power to a DC load, for a solar power generation system containing an AC load, an inverter needs to be added to convert the DC power to AC power.

Solar power generation uses photovoltaic technology that converts solar radiant energy into electrical energy using a square array of solar cells. According to the operation mode, solar power generation can be divided into grid-connected photovoltaic power generation and off-grid photovoltaic power generation.

1. Grid-connected photovoltaic power generation is a photovoltaic power generation system that is connected to the grid and transmits power to the grid. It is the stage where photovoltaic power generation enters the stage of large-scale commercial power generation, and grid-connected photovoltaic solar power stations have become an important development direction of the power industry. It is the mainstream trend in the development of photovoltaic power generation technology in the world today. The grid-connected system is composed of solar cell square array, system controller, grid-connected inverter and so on.

2. Off-grid photovoltaic solar power generation refers to photovoltaic systems that are not connected to the grid to provide independent power. Off-grid photovoltaic solar power plants are mainly used in areas without electricity and some special places far away from the public grid. The independent system is composed of photovoltaic modules, system controller, battery pack, DC / AC inverter, etc.