How works solar inverters?

How works solar inverters? Comparing types and technologies of  solar inverters.


Solar panels are not the only component you should consider when evaluating your equipment in the solar system.In a solar system, solar power inverters play an equally important role: they convert the electricity that your solar panels create into a form that can be used by the appliances, lighting and other electronics in your home.Once you know how solar inverters work and the various types of solar system inverters available.

How works solar inverters  in a PV system

When the sun shines on your solar panels, electrons move around in the solar cells, producing direct current (DC) energy. Circuits in the cells gather that energy to be used in your home.
Your solar inverter enters here. Most households use alternating current (AC) energy, not DC, so that the energy generated by your solar panels is not useful. When your solar panels collect sunlight and convert it into energy, it is sent to the inverter, which transforms the DC energy into AC energy. At that stage, solar electricity can power your electrical appliances and electronics, or it can feed back into the grid if you produce more electricity than you need.

Comparison of solar inverter technologies: inverter string vs. microinverter vs power optimizer.

The same basic task for all inverters is to convert DC solar energy into useful AC energy for your home. However, there are three different solar inverter technologies that you can choose from for your solar panel system.

String inverters: A centralized standard inverter

Most small solar power systems use a string inverter, also called a " centralized " inverter. Each panel is wired into " strings " in a solar PV system with a string inverter. When they produce energy, everything is sent to a single inverter, which is usually on the side of your home, garage or basement. All electricity from your solar panels will be converted to DC electricity for your property. 
Pros: String inverters are the lower cost option and are a latest technology of inverters .They are also the easiest to maintain because they can be easily reached.
Cons: When your system uses a string inverter, only the least productive solar panel produces as much useful electricity. Electricity production can be " bottlenecked " or dramatically reduced for a system with a string inverter if only one or two panels are in the shade or are not working properly. 
Best for: properties with uncomplicated roofs that keep the sunlight all day long and home-owners looking for economic solar photovoltaic systems.

Microinverters: inverter with high performance for complex systems

If a string inverter can be regarded as a centralized inverter, microinverters are inverters distributed. Microinverter solar PV systems have a small inverter installed on the site of each solar panel. Instead of sending energy to a single inverter from each panel, microinverter systems convert DC solar energy to AC energy right on the roof. 
Pros: Microinverters are more efficient than string inverters when converting energy because they are located on the roof near the solar panel. Microinverter systems will still generate energy, even if one or two panels of the system are underperformed. Microinverters also enable the performance of specific panels to be monitored, making it easier to identify production problems if they arise. 
Cons: Microinverters cost much more than a string inverter and can be harder to maintain or repair in case of a problem because they are on the roof.
Best for: systems with multi - directional solar panels, homeowners who want to maximize solar energy production in a small space and properties that have " complicated " roofs with gables, chimneys or other shade-producing objects.

Power optimizers: an option for pairing with a string inverter

Power optimizers can be considered to be a compromise between string and micro-inverters. Like microinverters, power optimizers are located on the roof next to individual solar panels (or are integrated with them). However, power optimizer systems continue to send energy to a centralized inverter.
Power optimizers even at the site of the solar panel do not switch DC electricity to AC electricity. Instead, the DC electricity is " conditioned " by fixing the electricity voltage at which point the electricity is sent down to the string inverter. A system that combines power optimizers with a string inverter is more efficient than with a string inverter. 
Choose your home's best inverter option
Now that you know how solar inverters work, you decide which type is best for your solar photovoltaic system. The choice at the end of the day depends on how much you are prepared to pay for additional performance and whether you are prepared for additional maintenance. 

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