Open AccessCompensation of three- phase unsymmetrical currents systems with symmetric al voltage (direct)
Author(s) -
Elia Georgiana Dragomir
Publication year - 2018
Publication title -
scientific bulletin
Language(s) - English
Resource type - Journals
eISSN - 2392-8956
pISSN - 1454-864X
DOI - 10.21279/1454-864x-18-i1-043
Subject(s) - harmonics , compensation (psychology) , three phase , ac power , electric power system , voltage , phase (matter) , direct current , control theory (sociology) , power (physics) , electrical network , current (fluid) , engineering , electrical engineering , electronic engineering , computer science , physics , thermodynamics , psychology , control (management) , artificial intelligence , psychoanalysis , quantum mechanics
The power analysis of the entire three-phase electrical system provides brief indications due to the compensation between the phases of the system of active and reactive powers. Only analysis of the electrical phases characteristics (currents, voltages, powers) of the three-phase system has theoretical and practical particular importance for balancing systems as well as analyzing the currents and powers that load the phases of the system. Akagi's "imaginary reactive power" method offers low efficiency and is polluting, introducing three order parasitic harmonics (compensating currents containing only half of the currents to be compensated) for three-phase unsymmetrical systems.