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Voltage Harmonic Impacts on Electric Motors: A Comparison between IE2, IE3 and IE4 Induction Motor Classes

Institute of Technology, Electrical Engineering Faculty, Federal University of Pará, Belém 66075-110, PA, Brazil
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Energies 2020, 13(13), 3333; https://doi.org/10.3390/en13133333
Received: 3 June 2020 / Revised: 23 June 2020 / Accepted: 25 June 2020 / Published: 30 June 2020
(This article belongs to the Special Issue Permanent Magnet Electrical Machines)
Global energy systems are undergoing a transition process towards renewable energy and energy efficiency practices. Induction motors play an important role in this energy transformation process since they are widely used as industrial loads, representing more than 53% of global energy consumption. With more countries adopting minimum energy performance standards through more efficient induction motors, comparisons between these new technologies in the presence of electrical disturbances must be systematically evaluated before adopting a substitution policy in the industry. To this end, this work presents a comparative analysis of the impact of harmonic voltages on the performance and temperature rise of electric motors classes IE2, IE3 and IE4 in the same operational conditions in view of future substitutions. The results show that under ideal operating conditions the IE4 class permanent magnet motor has better performance in terms of consumption and temperature, however presenting non-linear characteristics. In the presence of voltage harmonics, this scenario changes completely according to the harmonic content. Finally, aiming to analyze the harmonics influence in the motor temperature rise a statistical analysis by means of Spearman correlation matrices is presented. View Full-Text
Keywords: energy efficiency motors; harmonic distortion; efficiency classes; line start permanent magnet motor (LSPMM); Spearman correlation energy efficiency motors; harmonic distortion; efficiency classes; line start permanent magnet motor (LSPMM); Spearman correlation
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MDPI and ACS Style

Muñoz Tabora, J.; de Lima Tostes, M.E.; Ortiz de Matos, E.; Mota Soares, T.; Bezerra, U.H. Voltage Harmonic Impacts on Electric Motors: A Comparison between IE2, IE3 and IE4 Induction Motor Classes. Energies 2020, 13, 3333.

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