Why is it more expensive than the grid -connected power generation system?

Why is it expensive than grid-based power generation systems than grid-connected inverters? Actually, the cyber power generation system requires a battery. He accounts for 30-50%of the cost of the network power generation system. And the battery life of the two is not long, the life of lead-acid battery is usually 3-5 years, and lithium battery life is usually 8-10 years.

The grid system is combined by components, inverters, solar meters, loads, two -way meters, parallel meters, and grid grids. The DC electricity generated by solar panels is transformed into a transmitting flow of the inverter and transported the power grid. The solar separation system is composed of components, controllers/inverters, battery packs, loads and other equipment. In the case of solar energy column array, the controller charges the solar energy to the lithium battery, and then the load supply passes the inverter.

And the network inverter is more complicated than the grid -connected inverter. The parallel inverter has a two -level structure of voltage and inverter, while the departure inverter has four -level structures in controller, boost, inverter and isolation. The cost is about several times the grid -connected inverter.

In the case of equivalent power output, the overload capacity of the network inverter is more than 30%. The component level of the grid -connected inverter, the output grid, usually does not require overload capacity. Therefore The mesh inverter outputs to the load, and most of the load is perceptual load, and the power output is 3 to 5 times the rated power. Therefore, the overload capacity of the departure inverter is strong, and the component of the power supply will increase. Increase.