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Fernando J. T. E. Ferreira
University of Coimbra
Computer Science & IT Electrical & Electronics Engineering

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Unbalanced Voltages Impacts on the Energy Performance of Induction Motors Enrique C. Quispe; Iván D. López; Fernando J. T. E. Ferreira; Vladimir Sousa
International Journal of Electrical and Computer Engineering (IJECE) Vol 8, No 3: June 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (425.267 KB) | DOI: 10.11591/ijece.v8i3.pp1412-1422

Abstract

This paper presents the results of a study about the effects of unbalanced voltages on the energy performance of three-phase induction motors. The principal contribution of this paper is that presents a detailed analysis of the influence of positive and negative sequence voltage components and the angle between them on several characteristics such as: line currents, losses, efficiency and power factor under different voltage unbalanced conditions. A three-phase induction motor of 3 HP was used as a case study. The results of the investigation show that the positive sequence voltage must be considered together with the voltage unbalance factor (VUF) or percent voltage unbalance (PVU) index to evaluate the performance of the induction motor. It is also shown that the behavior of the motor load influences on the positive sequence parameters next to the voltage, while in the case of negative sequence only influences the negative sequence voltage.
Co-Authors Enrique C. Quispe Iván D. López Vladimir Sousa