Hybrid solar systems generate electric power in the similar way as a common grid-tie solar system. But it has special hybrid inverters and batteries to store energy for later use. This ability to store energy enables most hybrid systems to also operate as a backup power supply during a blackout, similar to a UPS system.
The system consists of photovoltaic module,solar panel mounting structure, hybrid inverter, battery pack, load, etc. The photovoltaic array converts solar energy into electric energy under the condition of light, and supplies power to the load through the hybrid inverter, and charges the battery pack at the same time. When there is no light, the battery supplies power to the hybrid inverter , and then supplies AC load power supply.
Compared with the grid-connected power generation system, the hybrid system adds charge and discharge controllers and batteries, and the system cost increases by about 30%, but the application range is wider. First, it can be set to output at rated power when the electricity price peaks to reduce electricity expenses. Second, it can be charged at the valley section of the electricity price, and discharged at the peak section, making use of the difference between the peak and valley price. Third, when the power grid is out of power, the photovoltaic system can be used as a backup power supply to continue When working, the inverter can be switched to the off-grid working mode, and the photovoltaic and battery can supply power to the load through the inverter.