The Pinceti model [8] was derived from the IEEE WG.3.4.11 [5] recommended model with some minor differences.
The IEEE WG. 3.4.11 and Pinceti models areshown in fig.
1 and fig. 2 respectively.
Comparing themodels in fig.
1 and in fig. 2, it can be noted that:1.
The capacitance is eliminated due to its little effecton the model behavior.2.
The two resistances in parallel with the inductancesare replaced by one resistance R (about ΩM 1) between the input terminals; this resistance has theonly scope to avoid numerical troubles. Theoperating principle is quite similar to that of theIEEE WG. 3.4.11 recommended model