Resistive-inductive model that connects two AC three-phase unbalanced interfaces. This model can be used to represent a cable in a three-phase unbalanced AC system. The voltage between the ports is
where Vi{p,n} is the voltage phasor at the connector p
or
n
of the i-th phase, while Iip
the current phasor entering from the connector p
of the i-th phase.
The model is parameterized with an impedance matrix Z. The matrix is symmetric thus just the upper triangular part of it has to be defined.
i1
, i2
and
i3
.
Setting a zero start value led Dymola 2017 on Linux to find a different solution
for
BuildingSystems.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepDown.YD.
Also, the current is typically non-zero and zero is anyway the default start value, hence there is no need to set it.