You have a new Fronius grid tie inverter, and you want to understand how they work. The technology behind them is brilliant but also complicated. Here are some answers to questions you might have:
What Is It?
A solar panel turns sunlight into direct current(DC) power, but that’s not what you need for your home since commercial appliances run on alternating current (AC). A solar inverter, then,converts the source into useable energy.
What Are the Different Kinds?
There are different kinds of solar inverters, and they all perform various functions. Here are a few of them:
- Stand-Alone – This type is used in isolated systems and draws DC energy converted by the panels. Ittypically hasinternal chargers to replenish the battery from an AC source. Normally, stand-alone inverters aren’t connected to the utility grid.
- Grid – This system injectsenergy into a power grid at 50-60 Hertz after converting it from DC to AC. Itautomatically shuts down once it loses supply from a utility. One example of this type is the Fronius grid tie inverters.
- Battery Backup – It’s a special unit designed to draw energy from a battery and often used to provide AC power during a blackout.
- String Inverters – They’re the most common type in home and commercial power systems. They work best if all your panels have the same characteristics and operate under the same conditions.
- Micro – This plug-and-play device is a single inverter connected to multiple panels and often used in photovoltaics. The output from the several units can be combined and fed to an electrical grid.
How Efficient Are They?
Inverters are around 93-96% efficient depending on the make and model. They can’t reach 100% because they require around 10-25 watts of DC power to run.
But, they can be improvedthrough an electronic technique calledmaximum power point tracking (MPPT). It checks the solar panel’s output and ensures that the highest possible electricity is harvested from the array.
What’s Solar Inverter Sizing?
These devices come in different sizes, which can be rated in watts. When it comes to sizing, 3 primary factors matter: the dimensions of your array, your geography, and site-specific conditions.
The inverter’ssize should correspond to the DC rating of your panels. So, if you live in an area that receives abundant sunlight, you’ll need higher wattage to handle the larger electrical load.
These are a few details you might want to know about the different kindsof inverters, including the Fronius grid tie inverters. They’ll helpaddress your most urgentsolar energy concerns.