This information is part of the Modelica Standard Library maintained by the Modelica Association.
This function determines the orientation of the symmetrical winding with phases. For an odd number of phases the difference of the windings angles of two adjacent phases is . In case of an even number of phases the aligned orientation of winding is not modeled since they do not add any information. Instead the windings are divided into two different groups. The first group refers to the indices . The second group covers the indices . The difference of the windings angles of two adjacent phases - of both the first and the second group, respectively - is . The phase shift of the two groups is .