Use of 3-dimensional finite elements for computation of temperature distribution in the Stator of an Induction Motor during Direct-On-Line Starting

• Autorzy: Bhattacharya N. K. , Naskar A. K. , Sarkar D.
• Języki publikacji: EN

Abstrakty

EN

Transient thermal analysis of induction machines is a subject of interest for machine designers in their effort to improve machine reliability. Since the stator is static, it is prone to overheating. Therefore, the study of transient thermal behavior in the stator is useful to identify causes of failure in induction machines. This paper presents a three-dimensional transient heat flow through the stator of an induction motor using arch shaped elements in the r-θ-z plane of the cylindrical co-ordinate system. A temperature-time method is employed to evaluate the distribution of loss in various parts of the machine. Using these loss distributions as an input for finite-element analysis, more accurate temperature distributions can be obtained. The model is applied to one squirrel cage Totally Enclosed Fan Cooled (TEFC) machine of 7.5 kW. Finally, the temperatures obtained by this three-dimensional approximation at different locations of the stator were compared for different stator currents considering the time required for each stator current during the transient in Direct-On-Line starting.

Słowa kluczowe

EN

FEM; finite element method; induction motor; thermal analysis; transients; design performance

PL

MES; metoda elementów skończonych; silnik indukcyjny; analiza termiczna; wydajność projektu

• Wydawca: Institute of Heat Engineering, Warsaw University of Technology
• Czasopismo: Journal of Power Technologies
• Rocznik: 2017
• Tom: Vol. 97, nr 4
• Strony: 347--353
• Opis fizyczny: Bibliogr. 25 poz., rys., tab., wykr.

Twórcy

autor

Bhattacharya N. K.

• Dept. of Physics, Jadavpur University, Kolkata-32, India

autor

Naskar A. K.

• Assistant Professor, Dept. of electrical engg., Techno India-Batanagar (TIB), Kolkata-700141, India

autor

Sarkar D.

• EE Department, IIEST Shibpur, Howrah-711103, India

Bibliografia

• [1] G. Rosenberry, The transient stalled temperature rise of castaluminum squirrel-cage rotors for induction motors, Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems 74 (3) (1955) 819–824.
• [2] S. K. Chowdhury, P. K. Baski, A simple lumped parameter thermal model for electrical machine of tefc design, in: Power Electronics, Drives and Energy Systems (PEDES) & 2010 Power India, 2010 Joint International Conference on, IEEE, 2010, pp. 1–7.
• [3] K. Reichert, The calculation of the temperature distribution in electrical machines with the aid of the finite difference method, EGZ. A Bd 90 (1969) H6.
• [4] C. Tindall, S. Brankin, Loss-at-source thermal modelling in salient pole alternators using 3-dimensional finite difference techniques, IEEE Transactions on Magnetics 24 (1) (1988) 278–281.
• [5] A. Armor, M. Chari, Heat flow in the stator core of large turbinegenerators, by the method of three-dimensional finite elements part ii: Temperature distribution in the stator iron, IEEE Transactions on Power Apparatus and Systems 95 (5) (1976) 1657–1668.
• [6] C.-C. Hwang, S. Wu, Y. Jiang, Novel approach to the solution of temperature distribution in the stator of an induction motor, IEEE transactions on Energy Conversion 15 (4) (2000) 401–406.
• [7] A. Armor, Transient, three-dimensional, finite-element analysis of heat flow in turbine-generator rotors, IEEE Transactions on Power Apparatus and Systems (3) (1980) 934–946.
• [8] E. Dlala, Comparison of models for estimating magnetic core losses in electrical machines using the finite-element method, IEEE Transactions on Magnetics 45 (2) (2009) 716–725.
• [9] S. Ruoho, T. Santa-Nokki, J. Kolehmainen, A. Arkkio, Modeling magnet length in 2-d finite-element analysis of electric machines, IEEE Transactions on Magnetics 45 (8) (2009) 3114–3120.
• [10] S. Ruoho, E. Dlala, A. Arkkio, Comparison of demagnetization models for finite-element analysis of permanent-magnet synchronous machines, IEEE Transactions on Magnetics 43 (11) (2007) 3964–3968.
• [11] H. X. Xia, L. Li, J. J. Du, L. Liu, Analysis and calculation of the 3d rotor temperature field of a generator-motor, in: Electrical Machines and Systems (ICEMS), 2011 International Conference on, IEEE, 2011, pp. 1–4.
• [12] M. Islam, A. Arkkio, Time-stepping finite-element analysis of eddy currents in the form-wound stator winding of a cage induction motor supplied from a sinusoidal voltage source, IET Electric Power Applications 2 (4) (2008) 256–265.
• [13] R. Lin, A. Arkkio, 3-d finite element analysis of magnetic forces on stator end-windings of an induction machine, IEEE Transactions on Magnetics 44 (11) (2008) 4045–4048.
• [14] M. J. Islam, J. Pippuri, J. Perho, A. Arkkio, Time-harmonic finiteelement analysis of eddy currents in the form-wound stator winding of a cage induction motor, IET Electric Power Applications 1 (5) (2007) 839–846.
• [15] D. AK Sarkar, Naskar, Approximate analysis of transient heat conduction in an induction motor during reactor starting, in: Power Electronics India International Conference, IEEE, 2010, pp. 1–8.
• [16] D. Sarkar, N. Bhattacharya, Approximate analysis of transient heat conduction in an induction motor during star-delta starting, in: Industrial Technology, 2006. ICIT 2006. IEEE International Conference on, IEEE, 2006, pp. 1601–1606.
• [17] G. B. Kumbhar, S. M. Mahajan, Analysis of short circuit and inrush transients in a current transformer using a field-circuit coupled fe formulation, International Journal of Electrical Power & Energy Systems 33 (8) (2011) 1361–1367.
• [18] C. Mejuto, M. Mueller, M. Shanel, A. Mebarki, D. Staton, Thermal modelling investigation of heat paths due to iron losses in synchronous machines, IEEE PEMD.
• [19] B. R. Samaga, K. Vittal, Comprehensive study of mixed eccentricity fault diagnosis in induction motors using signature analysis, International Journal of Electrical Power & Energy Systems 35 (1) (2012) 180–185.
• [20] R. Mujal-Rosas, Analysis of the three-phase induction motor with spiral sheet rotor, International Journal of Electrical Power & Energy Systems 35 (1) (2012) 1–9.
• [21] E. Dlala, Comparison of models for estimating magnetic core losses in electrical machines using the finite-element method, IEEE Transactions on Magnetics 45 (2) (2009) 716–725.
• [22] M. Rajagopal, D. Kulkarni, K. Seetharamu, P. Ashwathnarayana, Axisymmetric steady state thermal analysis of totally enclosed fan cooled induction motors using fem, in: 2nd Nat. Conf. on CAD/CAM, 1994, pp. 19–20.
• [23] M. Rajagopal, K. Seetharamu, P. Ashwathnarayana, Transient thermal analysis of induction motors, in: IEEE Trans on Energy conversion, Vol. 13, IEEE, 1998, pp. 932–939.
• [24] N. Zhao, Z. Zhu, W. Liu, Thermal analysis and comparison of permanent magnet motor and generator, in: Electrical Machines and Systems (ICEMS), 2011 International Conference on, IEEE, 2011, pp. 1–5.
• [25] J. Pippuri, A. Belahcen, E. Dlala, A. Arkkio, Inclusion of eddy currents in laminations in two-dimensional finite element analysis, IEEE Transactions on Magnetics 46 (8) (2010) 2915–2918.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).