ABB PVI-3.0-TL-OUTD-S-US, Руководство по эксплуатации продукта

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ystem description
ABB grid-tied inverters provide the capability to supply the utility grid with energy obtained from photovoltaic
panels. To use the DC generated by a photovoltaic field efficiently, it must be transformed into alternating
current (AC) via a conversion process known as DC-AC inversion.
This process is the basis of all grid-tied inverters and is achieved very efficiently by the inverter without the use
of rotating elements. When the inverter output is connected in parallel to the utility power grid, the alternating
current output from the inverter flows directly into the distribution circuit, and is connected in turn to the public
distribution utility grid.
The photovoltaic energy system can thus feed all the connected user electrical loads:
• If the energy supply from the photovoltaic system is lower than the user’s load requirement, the quantity
of energy necessary to guarantee normal functioning of the connected appliances is taken from the public
distribution network.
• If the energy supply from the photovoltaic system is greater than the user’s load requirement (i.e. an
excess of energy is produced) it is sent directly into the public network, becoming available to other users.
Depending on prevailing codes and regulations of the installation area, the energy produced can be sold to the
utility or credited against future consumption, producing energy savings.
STRINGS AND ARRAYS
A photovoltaic panel consists of many photovoltaic cells mounted on the same support. A string consists of a
certain number of panels connected in series. An array consists of two or more strings connected in parallel.
Large photovoltaic systems can be made up of several arrays, connected to one or more inverters. By
maximizing the number of panels inserted into each string, the string output voltage is increased, which reduces
the cost and complexity of the photovoltaic system. The current of each array must fall within the limits of the
inverter.
Notes on the sizing of the system
Decisions about how to structure a photovoltaic system depend on a certain number of factors and considerations
to make, such as for example, the type of panels, the availability of space, the future location of the system,
energy production goals over the long term, etc.
A configuration program that can help to correctly size the photovoltaic system is available on the website.
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Appendix