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Smith Sustainable Design

Photovoltaic Solar Inverters

11/11/2013

1 Comment

 
Photovoltaic Solar Inverters
A key element of a photovoltaic solar system is the inverter. The purpose of the inverter is to take the direct current generated by the panels and change it into usable alternating current for your home. There are different types of inverters available, so below, we’ll take a look at the options available.

Micro Inverters

A micro inverter may also be referred to as a module inverter, so don’t be confused if you hear this term instead. Individual micro inverters usually attach directly to photovoltaic solar modules, and they work to extract the power from each panel. This is a very reliable inverter option which can enhance design flexibility. Micro inverters are particularly relevant for residential systems and rooftops with complex, shaded situations.  Micro inverters are exceptionally reliable and typically come with 15 year warranty. The potential downside is their expense, and they can add cost to the overall photovoltaic solar installation.

String Inverters

The panels in grid-tied photovoltaic solar systems are wired together, creating a string of panels. This is done to increase voltage while keeping current low, simplifying wiring needs and the size of the wire needed. String inverters can be wired into several strings of panels. A string is made up of 7 to 14 panels. String inverters are widely used and usually include a warranty period of 10 years to 20 years.

Central Inverters

A central inverter is a kind of string inverter, but it is best suited for use with larger photovoltaic solar installations. In these applications, a central inverter is a better choice because they can simplify installation and offer higher efficiency versus string inverters in large application scenarios. Using string inverters in a large application can drive up installation costs, whereas using central inverters can keep costs in check. 

1 Comment
solar inverter link
4/16/2014 07:10:23 pm

Nice information, thanks

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