What are the various types of solar inverters?

Various types of solar inverters.         


  • Central inverters
  • String inverters
  • Micro-inverters
  • Hybrid and off-grid Inverters (Battery based)
Inverters are a major part of any solar system, they are the system's brains. Although the main task of the inverter is to convert DC electricity produced by the solar panels into AC electricity, its role only grows. Inverters allow monitoring so that installers and owners can see how a system works and how much power it can generate. 
Inverters can also provide diagnostic information to help find faults and solve system problems. Inverters also have automatic control functions to improve grid stability and efficiency. Inverters are also responsible for battery management.




Central inverters.                                            


Central inverters are very similar to string inverters, but that is much larger and can support hundreds of panel strings. Instead of strings running directly on the inverter, such as with string models, the strings are connected together in a common distribution and combiner box that runs the DC to the central inverter, there it is converted to AC.Central inverters need fewer component connections, but a pad and a combination box. They are best suited for large systems with consistent production throughout the entire range.

String Type inverters.                                       

Sun panels are installed on a string in series. Assume that, if you have 25 panels, you can install 5 series of 5 panels. Multiple strings connect to a single inverter string. Each string carries the DC current produced by the solar panels to the string inverter, where it is converted to electricity consumed by usable AC power. Depending on the installation size, you can have several string inverters each receiving DC power with a few strings. 

Each string's output is reduced to the combat panel level. While string inverters can not handle shading problems, the technology has been proven to be cheaper than the micro-inverter. On-grid solar string inverters are commonly used in residential and commercial applications.

In addition, as technology improves so that string inverters have a higher power density in smaller sizes, string inverters become a popular alternative to central inverters in smaller systems smaller than 1 MW. Power optimizers offer similar benefits as micro-inverters, but are cheaper and can therefore be a good choice between micro-inverters or string inverters.

Micro-inverters                                                 


Microinverters have become a popular choice for commercial and residential facilities. Like power optimizers, micro-inverters are electronics at the module level, so that each panel requires one micro-inverter. Unlike power optimizers that do not convert, however, micro-inverters convert Direct Current (DC) power to Alternative Current (AC) directly on the panel and you do not need a string inverter to do so. 

In addition, due to the conversion of the panel level, if one or more panels are shaded or perform at a lower level than the others, the efficiency of the remaining panel does not decrease. Micro-inverters also monitor the performance of each panel, whereas string inverters show the performance of each string that does not show the performance of each panel. 

This makes micro-inverters good for installations with shading problems or with panels on multiple planes in different directions. Micro-inverter systems are more efficient, but these are often more cost - effective than string inverters.

Hybrid and off-grid Inverters (Battery based)   



With the new technology of solar storage, the importance of battery - based inverters or chargers has increased. The inverter / charger based on the battery is bi-directional, including both the battery charger and the inverter. You must operate a battery without a battery that doesn't work.Battery based inverter and chargers controllers can be interactive grid, single grid or off grid, depending on specification, rating and design. The main advantage of the inverter / charger(solar charge controller) is that it ensures the stable operation of critical loads that the presence or condition of the grid is reduced. 

In the event of a grid outage, it required grid - tied generation source to stop power generation. This is de-powering, which is known as anti-islanding, rather than islanding, which is defined as generating power to power a site in the event of a grid failure.

Grid tie inverters therefore do not generate power in the event of a grid outage, so that the user experiences an outage regardless of the availability of solar harvest. The inverter / chargers based on the battery power critical loads in the event of grid failure, but do so in a way that

In addition, the inverter and charger types can be classified as either interactive or standalone. The battery - based inverter and charger manages energy between the array and the grid while charging the batteries. They monitor the status of the batteries and regulate the charging and discharge of the batteries. 

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