Eccentricity fault identification in round rotor synchronous motors considering load variation

• Autorzy: Ebrahimi B. , Faiz J. , Etemadrezaie M. , Babaie M.

Warianty tytułu

PL

Błąd oceny ekscentryczności w silniku synchronicznym o różnym obciążeniu

• Języki publikacji: EN

Abstrakty

EN

Impacts of load variation have not been so far investigated on the eccentricity fault diagnosis in synchronous motors. In this paper, a synchronous motor under static and dynamic eccentricities with different load levels is modeled using winding function method (WFM) and finite element method (FEM). Self and mutual inductances of the stator windings, stator currents and torque are calculated and analyzed. Spectrum of the stator currents is utilized for eccentricity fault detection, its type recognition and its degree determination. Variation of eccentricity degrees and load levels on the selected indices is scrutinized separately and simultaneously. The accuracy of the obtained simulation results is verified by FEM and experimental results.

PL

Zbadano wpływ obciążenia na błąd diagnozowania ekscentryczności w silniku synchronicznym. Modelowano silnik używając metody WFM (Winding function method) i metodę elementu skończonego. Analizowano indukcyjności własna i wzajemną stojana oraz moment. Analizę widmową prądu stojana użyto do oceny ekscentryczności. Oceniono dokładność diagnozowania.

Słowa kluczowe

EN

synchronous motor; WFM; FEM; fault diagnosis

PL

silnik synchroniczny; ekscentryczność

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2011
• Tom: R. 87, nr 5
• Strony: 288--292
• Opis fizyczny: Bibliogr. 15 poz., rys., tab.

Twórcy

autor

Ebrahimi B.

autor

Faiz J.

autor

Etemadrezaie M.

autor

Babaie M.

• Center of Excellence on Applied Electromagnetic Systems, School of Electrical and Computer Engineering, University of Tehran, Tehran, Iran

Bibliografia

• [1] B. M. Ebrahimi and J. Faiz, "Diagnosis and performance analysis of three-phase permanent magnet synchronous motors with static, dynamic and mixed eccentricity," IET Electric Power Applications, vol. 4, no. 1, Feb. 2010, pp. 53-66.
• [2] Stoll, R. L., Hennache, A., “Method of detecting and modeling presence of shorted turns in DC field winding of cylindrical rotor synchronous machines using two airgap search coil,” IEE Proceeding Vol. 135, No. 6, pp. 281-294, November 1988.
• [3] Hsu, J. S., and Stein, J., “Effect of eccentricities on shaft signals studied through windingless rotors,” IEEE Transaction on Energy Conversion, Vol. 9, No. 3, pp. 564:571, September 1994.
• [4] Hsu, J. S., and Stein, J., “Shaft signal of salient-pole synchronous machines for eccentricity and shorted-field-coil detections,” IEEE Transaction on Energy Conversion, Vol. 9, No. 3, pp. 572-578, September 1994.
• [5] Alger, P. L., and Samson, H. W., “Shaft currents in electric machines,” AIEE Transaction pp. 235-245, February 1924.
• [6] Verma, S. P., and Girgis, R. S., Shaft potentials and currents in large turbo generators. Report for the Canadian Electrical Association, Research & Development, Suite 580, One Westmount Square, Monteral, Quebec, H3Z 2P9, May 1981.
• [7] Meyer, A., Joho, R., Posedal, Z., Reichert, K., and Ammann, C., “Shaft voltage in turbosets: Recent development of a new grounding design to improve the reliability of the bearings,” Int. Conference on large high voltage electric systems, paris, August 1988.
• [8] Cameron, J. R., Thomson, W. T., and Dow, A. B., “Vibration and current monitoring for detecting airgap eccentricity in large induction motor,” IEEE Proceeding, Vol. 133, No. 3, pp. 155-163, May 1986.
• [9] Pollock, G. B., and Lyles, J. F., “Vertical hydraulic genertors experience with dynamic airgap monitoring,” IEEE Transaction on Energy Conversion, Vol. 7, No. 4, pp. 660-667, December 1992.
• [10] Toliyat, H. A., and Al-Nuaim, N. A., “Simulation and detection of dynamic airgap eccentricity in salient-pole synchronous machines,” IEEE Transaction on Industry Application, Vol. 35, No. 1, pp. 86-93, January/February 1999.
• [11] Al-Nuaim, N. A., and Toliyat, H. A., “A novel method for modeling dynamic air-gap eccentricity in synchronous machines based on modified winding function theory,” IEEE Transaction on Energy Conversion, Vol. 13, No. 2, pp.156- 162, June 1998.
• [12] Tabatabaei, I., Faiz, J., Lesani, H., and Nabavi-Razavi, M. T., “Modeling and simulation of a salient-pole synchronous generator with dynamic eccentricity using modified Winding function theory,” IEEE Transaction on Magnetics, Vol. 40, No. 3, pp.1550-1555, May 2004.
• [13] J. Faiz, Bashir Mahdi Ebrahimi, M. Valavi and H. A. Toliyat "Mixed eccentricity fault diagnosis in salient-pole synchronous generator using modified winding function method," Journal of Progress In Electromagnetics Research B, vol. 11, 2009, pp. 155-172.
• [14] J. Faiz, Bashir Mahdi Ebrahimi, B. Akin, and B. Asaie, "Criterion function for broken-bar fault diagnosis in induction motor under load variation using wavelet transform," Journal of Electromagnetics, Taylor & Francis, vol. 29, May 2009, pp. 220-234.
• [15] J. Faiz and Bashir Mahdi Ebrahimi, "Determination of numer of broken rotor bars and static eccentricity degree in induction motor under mixed fault," Journal of Electromagnetics, Taylor & Francis, vol. 28, Aug 2008. pp. 433 - 449.