Eggert, ChristianGäer, RalfKlinker, Frank2017-03-282017-03-282016-11-30http://hdl.handle.net/2003/3590510.17877/DE290R-17929We provide the general solution of problems concerning AC star circuits by turning them into geometric problems. We show that one problem is strongly related to the Fermat-point of a triangle. We present a solution that is well adapted to the practical application the problem is based on. Furthermore, we solve a generalization of the geometric situation and discuss the relation to non-symmetric, unbalanced AC star circuits.en610preprintGeometrieSternschaltung