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TRUJILLO-OROZCO, Odair Augusto; GARCES-GOMEZ, Yeison Alberto; USTARIZ-FARFAN, Armando Jaime  and  CANO-PLATA, Eduardo Antonio. Loads Characterization using the instantaneous power tensor theory. Dyna rev.fac.nac.minas [online]. 2015, vol.82, n.192, pp.19-25. ISSN 0012-7353.

This paper presents a novel methodology to characterize loads using the instantaneous power tensor theory in three-phase three-wire or four-wire systems. Tensor theory is based on the dyadic product between voltage and current instantaneous vectors; this definition allows us to represent the phenomena of power quality produced by loads operation, through the deformation of a cube and the trajectory of one of its three-dimensional vectors. This new way of characterization could help researchers to construct better models of three-phase loads, or to achieve a better monitoring and machines diagnosis. Results are reached by implementing simulations in MATLAB® and endorsed with experimental measurements.

Keywords : Power quality; vector trajectory; paths; current-voltage characteristic; characterizing loads; harmonics; Lissajous; diagnosis.

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