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Analysis of high speed induction motor for spindle made by copper die casting process


This paper deals with the analysis techniques of a high speed and high efficiency 10 kW, 30,000 rpm rated induction motor. The induction motor has been analyzed by time-varying magnetic finite element method and the test results show that there is a possibility that the motor could be used in a high speed spindle system application. All performances of the prototype are successfully verified. All analysis techniques are introduced to develop a high speed and high efficiency induction motor of copper die casting. The analysis techniques are composed of an electrical technique (magnetic analysis), and a mechanical technique (casting analysis, structural analysis, critical speed analysis and unbalance response analysis). Simulation results are compared with the experiment, and are within a 3% deviation.

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  1. 1.

    Peters, D. T., Cowie, J. G., Brush, E. F., and Midson, S. P., “Advances in Pressure Die Casting of Electrical Grade Copper,” Amer. Foundry Society Congress, 2002.

  2. 2.

    Peters, D. T., Cowie, J. G., Brush, E. F., and Midson, S. P., “Use of High Temperature Die Materials and Hot Dies for High Pressure Die Casting Pure Copper and Copper Alloys,” Trans. of the North Amer. Die Casting Assoc. Congress, 2002.

  3. 3.

    Deivasahayam, M., “Energy Conservation through Efficiency Improvement in Squirrel Cage Induction Motors by Using Copper Die Cast,” International Conference of Energy Efficiency in Motor Driven Systems (EEMODS’05), Vol. I, pp. 92–101, 2005.

    Google Scholar 

  4. 4.

    Haataja, J. and Pyrhonen, J., “Improving three-phase induction motor efficiency in Europe,” Power Engineering Journal, Vol. 12, pp. 81–86, 1998.

    Article  Google Scholar 

  5. 5.

    Lie, S. and Di Pietro, C., “Copper Die-Cast Rotor Efficiency Improvement and Economic Consideration,” IEEE Transactions of Energy Conversion. Vol. 10, No. 3, pp. 419–424, 1995.

    Article  Google Scholar 

  6. 6.

    Malinowski, J., McCormick, J., and Dunn, K., “Advances in Construction Techniques of AC Induction Motors: Preparation for Super-Premium Efficiency Levels,” IEEE Transactions of Industry Applications, Vol. 40, No. 6, pp. 1665–1670, 2004.

    Article  Google Scholar 

  7. 7.

    Honsinger, V. B., “Sizing equations for electrical machinery,” IEEE Trans. on Energy Conversion, Vol. EC-2, No. 1, pp. 116–121, 1987.

    Article  Google Scholar 

  8. 8.

    Boldea, I. and Nasar, S. A., “The Induction Machine Handbook,” CRC Press, 2002.

  9. 9.

    Veinott, C. G., “Theory and Design of Small Induction Motors,” McGraw-Hill Book, 1959.

  10. 10.

    IEEE Std. 112, “IEEE Standard Test Procedure for Poly phase Induction Motors and Generators,” 2004.

  11. 11.

    IEC 60034-2-1, “Standard methods for determining losses and efficiency from tests (excluding machines for traction vehicles,” 2007.

  12. 12.

    Agamloh, E. B., “An Evaluation of Induction Machine Stray Load Loss From Collated Test Results,” IEEE Trans. on Industry App., Vol. 46, No. 6, pp. 2311–2318, 2010.

    Article  Google Scholar 

  13. 13.

    Hong, D. K., Woo, B. C., and Koo, D. H., “Rotordynamics of 120,000 r/min 15 kW Ultra High Speed Motor,” IEEE Trans. Magn., Vol. 45, No. 6, pp. 2831–2834, 2009.

    Article  Google Scholar 

  14. 14.

    Lalanne, M. and Ferraris, G., “Rotordynamics prediction in engineering,” Wiley, 1998.

  15. 15.

    Chen, W. J. and Gunter, E. J., “Introduction to dynamics of rotorbearing systems,” Eigen Technologies, 2005.

  16. 16.

    Na, U. J., “Design and Analysis of a New Permanent Magnet Biased Integrated Radial-Axial Magnetic Bearing,” Int. J. Precis. Eng. Manuf., Vol. 13, No. 1, pp. 133–136, 2012.

    MathSciNet  Article  Google Scholar 

  17. 17.

    ISO 1940-1, “Mechanical vibration-balance quality requirement for rotors in a constant (rigid) state,” 2003.

  18. 18.

    API Standard 611, “General-purpose Steam Turbines for Petro-leum, Chemical, and Gas Industry Services,” Fifth Edition, American Petroleum Institute, 2008.

  19. 19.

    Ganatra, N. and Ratel, R. C., “Witness Testing of API 610 Centrifugal Pumps and API 611 Steam Turbines,” Proc. of the 27th International Pump Users Symposium, pp. 71–79, 2011.

  20. 20.

    Hong, D. K., Woo, B. C., Lee, J. Y., and Koo, D. H., “Ultra High Speed Motor Supported by Air Foil Bearings for Air Blower Cooling Fuel Cells,” IEEE Trans. Magn., Vol. 48, No. 2, pp. 871–874, 2012.

    Article  Google Scholar 

  21. 21.

    Hong, D. K., Woo, B. C., and Koo, D. H., “Rotordynamics and Unbalance Response Analysis of 200 kW, 15 krpm, 3 Phase Induction Motor,” Przeglad Elektrotechniczny, Vol. 86, No. 5, pp. 129–132, 2010.

    Google Scholar 

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Correspondence to Do-Kwan Hong.

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Hong, DK., Choi, JH., Han, PW. et al. Analysis of high speed induction motor for spindle made by copper die casting process. Int. J. Precis. Eng. Manuf. 13, 2251–2257 (2012).

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  • Casting analysis
  • Magnetic analysis
  • CT scan
  • Copper die casting high speed Induction motor for spindle
  • Critical speed analysis
  • Unbalance response analysis