Full-load range in-situ efficiency estimation method for induction motors using only a direct start-up

J. Rengifo, E. Albanez, J. Benzaquen, A. Bueno, J. M. Aller

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

Abstract

The efficiency estimation of electric motors has become a key subject due to industrial energy policies, environmental concerns, and the cost of electricity. It is of major interest to test a machine in-situ, as the installation conditions and the local grid voltage unbalance deeply affect the efficiency of the electric motor. To address this issue, this paper presents a methodology to estimate the efficiency of three-phase induction motors in-situ. The proposed method only requires a direct start-up of the motor to acquire the stator voltage and current waveforms during the acceleration process. The proposed methodology was validated experimentally using two distinct NEMA design induction motors with loading ranges between 30% and 120%. The efficiency results were compared with the IEEE Std. 112-B results, With a maximum deviation of 1.4% between the two methods. The results demonstrate the advantages of the proposed test for in-situ applications, as it is accurate, easy and fast to perform on energy audits.

Original languageEnglish
Title of host publicationProceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1213-1219
Number of pages7
ISBN (Electronic)9781538624777
DOIs
StatePublished - 24 Oct 2018
Event23rd International Conference on Electrical Machines, ICEM 2018 - Alexandroupoli, Greece
Duration: 3 Sep 20186 Sep 2018

Publication series

NameProceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018

Conference

Conference23rd International Conference on Electrical Machines, ICEM 2018
Country/TerritoryGreece
CityAlexandroupoli
Period3/09/186/09/18

Keywords

  • -Induction motors
  • Equivalent circuits
  • Parameter estimation
  • Rotating machine testing

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