PV inverters (also called solar inverters) are designed to convert direct current (DC) into alternating current (AC). There are three major types of PV inverters but each plays a similar role of transferring a charge to help power utility grids and home appliances. One negative of the inverters is the much shorter lifespan compared to the actual solar panels. This means it is necessary to install a new inverter when needed to ensure the solar system is able to continue running at full capacity.
Here are the 3 types of PV inverters:
The stand-alone inverters are an independent piece of equipment because it does not need to be connected directly to the solar panel setup. This type of inverter is able to draw its source of power from one or more batteries which are recharged via a solar powering unit or alternative energy sources, such as wind turbines, hydro turbines, or engine generators. A major positive about this stand-alone system is not being affected by power cuts because it is completely separate from the main power grid.
This type of inverter is more practical for the off-grid solar array units. A practical use for these inverters is the portable solar chargers that are used for water pumps, cell phones, laptops, and car batteries. Plus, this setup is also preferred by those that wish to live in remote areas that aren’t serviced by the energy companies.
The grid tie inverter is the right choice in situations where the home solar installation is connected directly to the local power grid. This type of inverter is the preferred choice for property owners that wish to benefit from net metering and the most popular in urban areas because it is more cost-effective to install due to not requiring a separate battery. Plus, this setup must be connected to the home electric meter to make sure the electric company is aware of the total amount of energy that you have been able to produce.
The battery backup inverters are preferred on the multi-functional solar setups and any of direct current produced gets sent first to a battery. The stored power in the battery is then passed to the inverter that has the ability to convert the energy into the preferred current. Also, once the battery is fully charged the excess direct current is stored and passed to the local grid. This type of inverter is generally a combination of the stand-alone and grid tie system and is a highly reliable option that has the potential to generate money because of the amount of energy passed to the local power grid.