Development of Thermal Equivalent Circuit of Surface Mounted Permanent Magnet BLDC Machine

MALLIKARJUNA RAO PASUMARTHI, P.R.J. Lakshmi, T. Narasimhulu

Abstract


Permanent magnet (PM) motors are popular choice for Industrial uses due to their great efficiency, power density and torque-to-weight ratio. The prediction of the temperature profile inside an operating electric motor is one of the most important challenges while designing. This paper focuses on thermal analysis of surface mounted permanent magnet (SMPM) Brushless direct current (BLDC) electric motor. In this paper, a lumped parameter thermal network is developed to predict the motor heat flow and temperatures. The network is composed of interconnected nodes and thermal resistances representing the heat process within motor for steady state analysis. Steady state results are obtained using this approach. This thermal network is accurately sufficient to predict the thermal behaviour of the critical parts in the electric motor as well as provides information necessary for component material selection, lubricants, cooling methods, insulation, etc.

Keywords: permanent magnet, surface mounted, temperature profile, thermal network

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References


Boglietti A., Cavagnino A., Staton D., et al. Evolution and modern approach for thermal analysis of electrical machines. IEEE Trans Ind Electron. 2009; 56(3).

Ding X., Bhattacharya M., Mi C. Simplified thermal model of PM motor in hybrid vehicle application taking into account eddy current loss in magnets. J Asian Electric Vehicles. 2010; 8(1).

Lumped Parameter Thermal Modeling of Electric Machines Analysis of an Interior Permanent Magnet Synchronous Machine for Vehicle Applications

Gerling D., Dajaku G. Novel lumped-parameter thermal model for electrical systems. (EPE), European Conference on Power Electronics and Applications. 2005, Dresden, Germany.

Chapman A.J. Fundamentals of Heat Transfer. Macmillan Publishing Company; 1987.

Boglietti A., Cavagnino A., Lazzari M. A simplified thermal model for variable-speed self-cooled industrial induction motor. IEEE Trans Ind Appl. 2003; 39(4).

Mellor H., Roberts D., Turner R. Lumped parameter thermal model for electric machines of TEFC design. IEEE Proc Ind Appl. 1991; 138(5).

Liu Z.J., Howe D., Mellor P.H. Thermal analysis of permanent magnet machines. IEEE Proc Electrical Machines Drives. 1993; 359–64p.

Trigeol J.F., Girault M., Bertin Y. Estimation of the heat losses in an electrical machine using an inverse method. (ICEM), International Conference on Electrical Machines. 2004; Cracow, Poland.

Parviainen A., Pyrhönen J., Niemelä M. Modelling of axial flux pm machines thermal analysis. (ICEM), International Conference on Electrical Machines. 2004; Cracow, Poland.

Cho S.M., Jung S.Y., Jung H.K. Thermal characteristics and experimental validation in steel cord PMLSM considering running condition. (ICEM), International Conference on Electrical Machines. 2004; Cracow, Poland.

Chin Y.K., Staton D.A., Soulard J. Thermal lumped circuit and finite element analysis of a permanent magnet traction motor. (ICEM), International Conference on Electrical Machines. 2004; Cracow, Poland.

Tang W.H., Wu Q.H., Richardson Z.J. A simplified transformer thermal model based on thermal-electric analogy. IEEE Trans Power Delivery. 2004; 19(3).

Lindström J. Thermal model of a Permanent-magnet Motor for a hybrid electric vehicle. Licentiate thesis. 1999 April; Chalmers University of Technology, Göteborg, Sweden,

Staton D.A. Thermal computer aided design – advancing the revolution in compact motors. (IEMDC) International Electric Machines and Drives Conference. 2001; IEEE: Cambridge, Mass, USA.

Holman J.P. Heat Transfer. New York: McGraw-Hill; 1997.

Mills F. Heat Transfer. Prentice-Hall: Englewood Cliffs, New Jersey: 1999.

Simonson J.R. Engineering Heat Transfer. 2nd Edn. New York: MacMillan; 1998.

Bejan Heat Transfer. Hoboken, New Jersey: Wiley; 1993.

Janna W.S. Engineering Heat Transfer. New York: Van Nostrand-Reinhold; 1988.




DOI: https://doi.org/10.37628/ijaem.v1i1.110

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