Key Elements Of A Photovoltaic System: "Strings" And "Arrays - Power One AURORA PVI-OUTD-US Series Installation And Operator's Manual

Installation and Operator's Manual
(PVI-3.0/3.6/4.2-OUTD-x-US Rev: 2.1)
2.1

Key elements of a photovoltaic system: "STRINGS" and "ARRAYS"

The so-called STRINGS technology has been developed in order to reduce the
installation costs of a photovoltaic system as much as possible. These costs are mainly
related to the wiring operations on the inverter's DC side and the consequent
distribution on the AC side.
A photovoltaic panel is composed of many photovoltaic cells assembled on the same
mount. A String is composed of a certain number of panels electrically connected in
series. An Array is composed of two or more strings electrically connected in parallel.
Larger photovoltaic systems may be implemented by using several arrays connected
to one or more Aurora inverters.
The greater the number of panels in each string, the lower the cost and the less
complex the wiring connections of the system.
PV Cell
PV Panel
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Fig. 2 - Array Composition
PV String
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PV Array
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