This model represents a generic variable voltage source. The
model has a boolean flag use_V_in, when this flag is
equal to true the voltage of the source is imposed by
the input variable V_in. When the flag is equal to
false the voltage source is equal to the parameter
V.
In case the phase system adopted has PhaseSystem.m >
0 and thus the connectors are over determined, the source
can be selected to serve as reference point. The parameters
potentialReference and definiteReference
are used to define if the source model should be selected as source
for the reference angles or not. More information about
overdetermined connectors can be found in Olsson Et Al. (2008).
Hans Olsson, Martin
Otter, Sven Erik Mattson and Hilding Elmqvist.
Balanced Models in Modelica 3.0 for Increased Model
Quality.
Proc. of the 7th Modelica Conference, Bielefeld, Germany, March
2008.