Consideration Concerning Quality in Three-Phase Electrical Circuits

The efficiency problem in electrical energy alimentation can be analyzed by values of apparent power components. In this paper, theelectrical quality in electrical energy alimentation is analyzed, most of all, by the presence of negative and zero components and harmonics components. Unbalanced and non-linear consumers generate those components. Negative or zero symmetric sequence componentsdetermine the presence of fluctuating power and non-symmetric power. The value of fluctuating power or non-symmetric power characterizes the efficiency in electrical energy alimentation.