Kirchhoff’s Current Law (KCL) requires that at any node (or
junction) in an electrical circuit, the sum of currents flowing into
that node is equal to the sum of currents flowing out of that
node, where a node is any spot where two or more wires are
joined. From this point of view, a ground-fault point, positive/
negative bus bar, or even the inverter can be viewed as a node
(or junction) in PV systems. Therefore, the current relationships
of the normally operating PV arrays are summarized in the
following equations.
Kirchhoff’s Current Law (KCL) requires that at any node (or junction) in an electrical circuit, the sum of currents flowing into that node is equal to the sum of currents flowing out of that node, where a node is any spot where two or more wires are joined. From this point of view, a ground-fault point, positive/negative bus bar, or even the inverter can be viewed as a node (or junction) in PV systems. Therefore, the current relationships of the normally operating PV arrays are summarized in the following equations.
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