World Academy of Science, Engineering and Technology
Published June 24, 2012 | Version 13844
Journal article Open

An Experimental Investigation of Heating in Induction Motors

Description

The ability to predict an accurate temperature distribution requires the knowledge of the losses, the thermal characteristics of the materials, and the cooling conditions, all of which are very difficult to quantify. In this paper, the impact of the effects of iron and copper losses are investigated separately and their effects on the heating in various points of the stator of an induction motor, is highlighted by using two simple tests. In addition, the effect of a defect, such as an open circuit in a phase of the stator, on the heating is also obtained by a no-load test. The squirrel cage induction motor is rated at 2.2 kW; 380 V; 5.2 A; Δ connected; 50 Hz; 1420 rpm and the class of insulation F, has been thermally tested under several load conditions. Several thermocouples were placed in strategic points of the stator.

Files

13844.pdf

Files (247.7 kB)

Name Size
md5:fd1be07b485c7d2d3f4b84f0a99dd949
247.7 kB Preview Download

Additional details

References

  • J. T. Boys, M. J. Miles, "Empirical thermal model for inverter-driven cage induction machines," IEE Proc-Electr. Power Appl., vol. 141, No.6, pp. 360-372, Nov. 1994.
  • J. M. Kauffman, and B. Laporte, "Analyse des performances des machines électriques," RGE, No. 8, pp. 36-40, 1994.
  • A. Bousbaine, W. F. Low, and M. McCormick, "Novel approach to measurements of iron and stray load losses in induction motors," in Proc. 1996 IEE, vol. 143, No. 1, pp. 78-86.
  • G. Kylander, "Thermal Modelling of small Cage Induction Motors," Int. symp., 1995, On Elect. Power Engin., pp. 235-240.
  • P. H. Mellor, D. Roberts, and D. R. Turner, " Lumped parameter thermal model for electrical machines of TEFC design," in Proc., Sep. 1991 IEE, vol. 138, No. 5, pp. 205-218.
  • R. Glises, A. Miraoui, and M. Kauffmann, "Thermal modelling for induction motor," J. Phys. III France 3, September 1993, pp. 1849-1859.
  • M. Benhaddadi, R. Khaldi and M. Benghanem, "Experimental study of heating in induction motor fed by PWM inverter," in May 19-21, 1997 IEEE, instr. And Meas., Techn., Conference, Ottawa, Canada, pp. 335- 338.
  • J. F. Moreno, F. P. Hidalgo and M. D. Martinez, "Realisation of the tests to determine the parameters of the thermal model of an induction machine," in Sept. 2001 IEE, Proc.-Electr. Power App., vol. 148, No.5, pp. 393-397.
  • E. Olivier, R. Perret and J. Perard, "Localization of the losses in an induction machine supplied by an inverter," Electric Machines and power Systems, No. 9, pp. 401-412, 1984. [10] A. Bousbaine, W. F. Low, M. McCormick and N. Benamrouche, "Thermal modelling of induction motors based on accurate loss density measurements," ICEM, Sept. 1992, pp. 953-957.