On the meaning of the park power components in three‐phase systems under non‐sinusoidal conditions

The definition and measurement of the power components in three‐phase systems under non‐sinusoidal conditions is becoming more and more an up‐to‐date problem. Some theories have already been proposed to face this problem, but the proposed solutions are not completely satisfactory, in particular when unsymmetrical, unbalanced systems are concerned. The study of three‐phase systems in terms of the Park transformation seems to be more attractive than other proposed methods. The present paper, after a short review of the properties of the Park transformation, discusses the physical meaning of the power components defined employing it, proposes a measuring equipment for the measurement of the defined power components and shows the results of some experimental work.