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Technical and Economic Evaluation of Efficiency Improvement after Rewinding in Low-Power Induction Motors: A Brazilian Case

Author

Listed:
  • Victor P. B. Aguiar

    (Department of Engineering and Technology, Federal Rural University of Semi-Arid Region, Mossoró 59625-900, Brazil
    Department of Electrical Engineering, Federal University of Ceará, Fortaleza 60455-900, Brazil
    This author is a member of IEEE.)

  • Ricardo S. T. Pontes

    (Department of Electrical Engineering, Federal University of Ceará, Fortaleza 60455-900, Brazil
    University of Fortaleza, Fortaleza 60440-900, Brazil)

  • Fernando J. T. E. Ferreira

    (Department of Electrical and Computer Engineering, University of Coimbra, 3030-290 Coimbra, Portugal
    Institute of Systems and Robotics, University of Coimbra, 3030-290 Coimbra, Portugal
    This author is a senior member of IEEE.)

Abstract

Nowadays the economic analysis of an induction motor’s life cycle is the clearest way to measure the viability of actions to promote energy-efficient technologies to the end user. The cost effectiveness in motors replacement by energy-efficient motors is a well-known practice that leads to energy savings, however this paper presents the cost-effectiveness of low-power induction motors which have their efficiency improved after rewinding. This process improves the investment viability and brings the greatest financial and energetic savings. In this paper, low-power induction motors are rewound and their efficiencies are measured by tests A and B from IEEE standard 112/2017. The rewound motors have better cost-effectiveness than replacement by IE3/Premium and even IE4/Super-Premium units. The rewound motors increase between 3 and 4 percentage points in relation to former efficiency and the payback is less than 2 years, regardless of the efficiency measurement method.

Suggested Citation

  • Victor P. B. Aguiar & Ricardo S. T. Pontes & Fernando J. T. E. Ferreira, 2018. "Technical and Economic Evaluation of Efficiency Improvement after Rewinding in Low-Power Induction Motors: A Brazilian Case," Energies, MDPI, vol. 11(7), pages 1-18, July.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:7:p:1701-:d:155498
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