THE FBD-METHOD, A GENERALLY APPLICABLE TOOL FOR ANALYZING POWER RELATIONS

A generally applicable method to analyse the relations connecting curr ents, voltages, instantaneous-, active-, nonactive- and apparent power quantities is described. By introducing a special m-conductor equival ent scheme an unified treatment of nonsinusoidal, unbalanced polyphase systems is possible and a simple definition of unsymmetrical loads ca n be derived. It is explained why it is necessary to distinguish betwe en the decomposition of quantities into components or into portions. T he method includes other ones well known and approved in the past as m ore special cases.