What is the Difference Between an On-grid Inverter and an Off-grid Inverter?
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What is the Difference Between an On-grid Inverter and an Off-grid Inverter?

Views: 15     Author: Site Editor     Publish Time: 2023-03-20      Origin: Site

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First of all, the photovoltaic solar inverter is also called a photovoltaic inverter power regulator. The use of solar inverters in the power generation system, we can divide it into two types: independent type (off-grid type) and grid-connected type. The classification of these two types is mainly photovoltaic According to the purpose of the power generation system, whether it is an off-grid solar inverter or a grid-connected solar inverter, there is no essential difference in appearance. The focus is on the "core", which is the difference in the function of the solar inverter itself. Individual solar inverter manufacturers cannot be ruled out. There will be some unique appearance designs, it is better to compare the functions in the form of diagrams so that it is easier to understand.


Here is the content list:

  • Grid-connected solar inverter

  • Off-grid solar inverter


Grid-connected solar inverter

The biggest difference of the grid-connected solar inverter is that it does not do any battery storage. The direct current generated by the solar panel is directly converted into alternating current through inversion and directly fed to the public power grid. Regulations and policies, otherwise grid connection cannot be provided. Grid-connected solar inverters are generally used in large-scale photovoltaic power station systems. Multiple PV strings connected in parallel are connected to the DC input of the same centralized solar inverter. Generally, three-phase IGBT power modules are used for high-power ones and three-phase IGBT power modules for small-power ones. Using field effect transistors, while using DSP conversion controllers to improve the quality of generated power, making it very close to sine wave current. Grid-connected solar inverters are generally divided into grid-connected solar inverters for photovoltaic power generation, grid-connected solar inverters for wind power generation, grid-connected solar inverters for power equipment power generation, and grid-connected solar inverters for power generation equipment. The biggest feature of the grid-connected solar inverter is the high power and low cost of the system.


Off-grid solar inverter

The off-grid solar inverter, as the name implies, is a system that is separated from the public grid. The direct current generated by the solar panel is first stored in the battery, and then the battery is transported to the off-grid solar inverter for the inverter to produce alternating current, which can be directly used by the load. Can return to battery storage too. For those remote areas without power network coverage, such as deserts, plateaus, and deep forests, it can be used to provide power needs anytime and anywhere. Off-grid solar inverter Complete system solution with modular components Xantrex XW consists of some manageable building blocks: XW solar inverter/charger, solar charge controller, automatic generator starter module, and system control board.


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