Off-line Flux Injection Test Probe for Screening Defective Rotors in Squirrel Cage Induction Machines

M. Jeong, J. Yun, Y. Park, Sang Bin Lee, Konstantinos N. Gyftakis

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

2 Citations (Scopus)
4 Downloads (Pure)

Abstract

The recent trend in squirrel cage induction motor manufacturing is to replace fabricated copper rotors with aluminum die-cast rotors to reduce manufacturing cost to stay competitive in the global market. Porosity in aluminum die-cast squirrel cage rotors is inevitably introduced during the die cast process. Porosity can cause degradation in motor performance and can lead to a forced outage causing irreversible damage in extreme cases. Many off-line and on-line quality assurance test methods have been developed and applied for assessment of rotor quality. However, years of experience with the existing test methods revealed that they are not suitable for quality testing or capable of providing a quantitative assessment of rotor porosity with sufficient sensitivity. In this paper, a new off-line test method capable of providing sensitive assessment of rotor porosity is proposed. It is shown that rotors with minor and distributed porosity that are difficult to detect with other tests can be screened out during manufacturing. The proposed method is verified through a 3 dimensional finite element analysis and experimental testing on closed and semi-open slot aluminum die cast rotors of 5.5 kW induction motors with porosity.
Original languageEnglish
Title of host publication2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED)
PublisherIEEE
ISBN (Electronic)978-1-5090-0409-6
ISBN (Print)978-1-5090-0410-2
DOIs
Publication statusPublished - 9 Oct 2017
Event11th IEEE International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives - Tinos, Greece
Duration: 29 Aug 20171 Sep 2017
Conference number: 11
https://www.egr.msu.edu/sdemped2017/home

Conference

Conference11th IEEE International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives
Abbreviated titleSDEMPED 2017
CountryGreece
CityTinos
Period29/08/171/09/17
Internet address

Bibliographical note

© 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Keywords

  • Aluminum Die-cast Rotor
  • Fault Detection
  • Fill Factor
  • Induction Machines
  • Porosity
  • Quality Assurance
  • Squirrel Cage Rotor

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  • Cite this

    Jeong, M., Yun, J., Park, Y., Lee, S. B., & Gyftakis, K. N. (2017). Off-line Flux Injection Test Probe for Screening Defective Rotors in Squirrel Cage Induction Machines. In 2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED) IEEE. https://doi.org/10.1109/DEMPED.2017.8062361