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Effects of currents decomposition on power calculation in nonsinusoidal conditions

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Abstract

The increased usage of nonlinear loads in electric systems has dissociated the voltage and current signals from the ideal sinusoidal form and, as a consequence, the traditional power calculation is no longer satisfactory. Several power calculation theories applied to nonsinusoidal signals have been proposed; however, there is no general agreement among them. This paper is inserted in this context, reviewing traditional and non-traditional electric power theories for three-phase four-wire systems. The power theories used in this study were the currents’ physical components power theory, the theory of instantaneous power, the Fryze–Buchholz–Depenbrock power theory, the IEEE standard 1459, and the conservative power theory. The mathematical definitions of power theories aforementioned were implemented and applied to real data. Furthermore, the effect of current decomposition based on different power theories was analyzed. The analysis of power theories indicates the particularities of its definitions and the results indicated that reactive current compensation may not minimize circuit losses significantly.

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Acknowledgements

The authors would like to thank the Brazilian National Research Council (CNPq) for financial support.

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Authors and Affiliations

  1. Post-Graduate Program in Electrical Engineering, Federal University of Campina Grande, Aprigio Veloso St, 882, Bodocongó, Campina Grande, Paraíba, Brazil

    Rodrigo de Almeida Coelho & Érica Mangueira Lima

  2. Electrical Engineering Department, Federal University of Campina Grande, Aprigio Veloso St, 882, Bodocongó, Campina Grande, Paraíba, Brazil

    Núbia Silva Dantas Brito & George Rossany Soares de Lira

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  1. Rodrigo de Almeida Coelho
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Correspondence to Rodrigo de Almeida Coelho.

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Coelho, R.A., Brito, N.S.D., de Lira, G.R.S. et al. Effects of currents decomposition on power calculation in nonsinusoidal conditions. Electr Eng 102, 2325–2339 (2020). https://doi.org/10.1007/s00202-020-01031-5

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