Journal of Electrical Engineering and Technology

  • 제13권4호
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  • Pages.1604-1613
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  • 2018
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  • 1975-0102(pISSN)
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  • 2093-7423(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
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Small-Size Induction Machine Equivalent Circuit Including Variable Stray Load and Iron Losses

  • Basic, Mateo (Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split) ;
  • Vukadinovic, Dinko (Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split)
  • 투고 : 2018.01.18
  • 심사 : 2018.03.14
  • 발행 : 2018.07.01
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초록

The paper presents the equivalent circuit of an induction machine (IM) model which includes fundamental stray load and iron losses. The corresponding equivalent resistances are introduced and modeled as variable with respect to the stator frequency and flux. Their computation does not require any tests apart from those imposed by international standards, nor does it involve IM constructional details. In addition, by the convenient positioning of these resistances within the proposed equivalent circuit, the order of the conventional IM model is preserved, thus restraining the inevitable increase of the computational complexity. In this way, a compromise is achieved between the complexity of the analyzed phenomena on the one hand and the model's practicability on the other. The proposed model has been experimentally verified using four IMs of different efficiency class and rotor cage material, all rated 1.5 kW. Besides enabling a quantitative insight into the impact of the stray load and iron losses on the operation of mains-supplied and vector-controlled IMs, the proposed model offers an opportunity to develop advanced vector control algorithms since vector control is based on the fundamental harmonic component of IM variables.

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참고문헌

  1. P. L. Alger, Induction Machines-Their Behavior and Uses, 2nd ed. New York: Gordon and Breach, 1995.
  2. M. Basic, D. Vukadinovic, and M. Polic, "Stray load and iron losses in small induction machines under variable operating frequency and flux: a simple estimation method," IEEE Trans. Energy Convers., Early Access Article (10.1109/TEC.2017.2759816).
  3. E. Levi, A. Lamine, and A. Cavagnino, "Impact of stray load losses on vector control accuracy in current-fed induction motor drives," IEEE Trans. Energy Convers., vol. 1, no. 2, pp. 442-450, Jun. 2006.
  4. E. Levi, M. Sokola, A. Boglietti, and M. Pastorelli, "Iron loss in rotor-flux-oriented induction machines: identification, assessment of detuning, and com- pensation," IEEE Trans. Power Electron., vol. 11, no. 5, pp. 698-709, Sep. 1996. https://doi.org/10.1109/63.535402
  5. M. Basic and D. Vukadinovic, "Vector control system of a self-excited induction generator including iron losses and magnetic saturation," Control Engineering Practice, vol. 21, no. 4, pp. 395-406, Apr. 2013. https://doi.org/10.1016/j.conengprac.2012.11.004
  6. G. Bertotti, "Physical interpretation of eddy current losses in ferromagnetic materials. I. Theoretical con- siderations," J. Appl. Phys., vol. 57, no. 6, pp. 2110- 2117, Mar. 1985. https://doi.org/10.1063/1.334404
  7. S. S. L. Chang, "Physical concepts or stray load loss in induction machines," Trans. Amer. Inst. Elect. Eng., vol. 73, no. 1, pp. 10-12, Jan. 1954.
  8. IEEE Standard Test Procedure for Polyphase Induction Motors and Generators (ANSI), IEEE Std 112-2004, 2004.
  9. Rotating Electrical Machines - Part 2-1: Standard Methods for Determining Losses and Efficiency from Tests (Excluding Machines for Traction Vehicles), IEC 60034-2-1:2014, 2014.
  10. A. Boglietti, R. Bojoi, A. Cavagnino, and S. Vaschetto, "Influence of the sinusoidal supply frequency on the induction motor stray load losses," in Proc. IECON, Montreal (QC), 2012, pp. 1847-1851.
  11. A. Boglietti, A. Cavagnino, L. Ferraris, and M. Lazzari, "Impact of the supply voltage on the strayload losses in induction motors," IEEE Trans. Ind. Appl., vol. 46, no. 4, pp. 1374-1380, July-Aug. 2010. https://doi.org/10.1109/TIA.2010.2049721
  12. A. Boglietti, A. Cavagnino, L. Ferraris, and M. Lazzari, "Induction motor equivalent circuit including the stray load losses in the machine power balance," IEEE Trans. Energy Convers., vol. 23, no. 3, pp. 796- 803, Sep. 2008. https://doi.org/10.1109/TEC.2008.921467
  13. S. Shinnaka, "Proposition of new mathematical models with core loss factor for controlling AC motors," in Proc. IECON, Aachen, Germany, 1998, pp. 297-302.
  14. M. Basic, D. Vukadinovic, and G. Petrovic, "Dynamic and pole-zero analysis of self-excited induction generator using a novel model with iron losses," Int. J. Elect. Power Energy Syst., vol. 42, no. 1, pp. 105-118, Nov. 2012. https://doi.org/10.1016/j.ijepes.2012.03.003
  15. T. A. Nadjafabadi and F. R. Salmasi, "A flux observer with online estimation of core loss and rotor resistances for induction motors," Int. Rev. Electr. Eng., vol. 4, no. 5, pp. 816-824, Oct. 2009.
  16. M. Hasegawa and S. Furutani, "Robust vector control of induction motors using full-order observer in consideration of core loss," IEEE Trans. Ind. Electron., vol. 50, pp. 912-919, Oct. 2003. https://doi.org/10.1109/TIE.2003.817606
  17. M. Basic, D. Vukadinovic, and I. Grgic, "Wind turbine- driven self-excited induction generator: a novel dynamic model including stray load and iron losses," 2nd Int. Multidisciplinary Conf. Computer and Energy Science, Split, Croatia, July 12-14, 2017.
  18. G. C. D. Sousa and B. K. Bose, "Loss modelling of converter induction machine system for variable speed drive," in IEEE Ind. Elec. Soc. Annu. Meeting IECON, San Diego (CA), 1992, pp. 114-120.
  19. A. Vamvakari, A. Kandianis, A. Kladas, S. Manias, and J. Tegopoulos, "Analysis of supply voltage distortion effects on induction motor operation," IEEE Trans. Energy Convers., vol. 16, no. 3, 2001, pp. 209- 213. https://doi.org/10.1109/60.937198
  20. Rotating Electrical Machines - Part 30-1: Efficiency Classes of Line Operated AC Motors, IEC 60034-30- 1, 2014.
  21. A. Boglietti, A. Cavagnino, M. Lazzari, and M. Pastorelli, "Predicting iron losses in soft magnetic materials with arbitrary voltage supply: an engineering approach," IEEE Trans. Magn., vol. 39, no. 2, pp. 981-989, Mar. 2003. https://doi.org/10.1109/TMAG.2003.808599
  22. M. Ranta, M. Hinkkanen, E. Dlala, A. K. Repo, and J. Luomi, "Inclusion of hysteresis and eddy current losses in dynamic induction machine models," in Proc. IEMDC, Miami (FL), 2009, pp. 1387-1392.
  23. D. M. Ionel, M. Popescu, S. J. Dellinger, T. J. E. Miller, R. J. Heideman, and M. I. McGilp, "On the variation with flux and frequency of the core loss coefficients in electrical machines," IEEE Trans. Ind. Appl., vol. 42, no. 3, pp. 658-667, May-June 2006. https://doi.org/10.1109/TIA.2006.872941
  24. D. M. Ionel, M. Popescu, M. I. McGilp, T. J. E. Miller, S. J. Dellinger, and R. J. Heideman, "Computation of core losses in electrical machines using improved models for laminated steel," IEEE Trans. Ind. Appl., vol. 43, no. 6, pp. 1554-1564, Nov.-Dec. 2007. https://doi.org/10.1109/TIA.2007.908159
  25. M. Popescu, D. M. Ionel, A. Boglietti, A. Cavagnino, C. Cossar, and M. I. McGilp, "A general model for estimating the laminated steel losses under PWM voltage supply," IEEE Trans. Ind. Appl., vol. 46, no. 4, pp. 1389-1396, July-Aug. 2010. https://doi.org/10.1109/TIA.2010.2049810
  26. A. Boglietti, A. Cavagnino, D. M. Ionel, M. Popescu, D. A. Staton, and S. Vaschetto, "A general model to predict the iron losses in PWM inverter-fed induction motors," IEEE Trans. Ind. Appl., vol. 46, no. 5, pp. 1882-1890, Sept.-Oct. 2010. https://doi.org/10.1109/TIA.2010.2057393