Magneto-Thermo-Mechanical Analysis of Electromagnetic Devices Using the Finite Element Method

Authors: Michael G. Pantelyat

Abstract:

Fundamental basics of pure and applied research in the area of magneto-thermo-mechanical numerical analysis and design of innovative electromagnetic devices (modern induction heaters, novel thermoelastic actuators, rotating electrical machines, induction cookers, electrophysical devices) are elaborated. Thus, mathematical models of magneto-thermo-mechanical processes in electromagnetic devices taking into account main interactions of interrelated phenomena are developed. In addition, graphical representation of coupled (multiphysics) phenomena under consideration is proposed. Besides, numerical techniques for nonlinear problems solution are developed. On this base, effective numerical algorithms for solution of actual problems of practical interest are proposed, validated and implemented in applied 2D and 3D computer codes developed. Many applied problems of practical interest regarding modern electrical engineering devices are numerically solved. Investigations of the influences of various interrelated physical phenomena (temperature dependences of material properties, thermal radiation, conditions of convective heat transfer, contact phenomena, etc.) on the accuracy of the electromagnetic, thermal and structural analyses are conducted. Important practical recommendations on the choice of rational structures, materials and operation modes of electromagnetic devices under consideration are proposed and implemented in industry.

Keywords: Electromagnetic devices, multiphysics, numerical analysis, simulation and design.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1339251

References:

[1] M. G. Pantelyat, “Multiphysical numerical analysis of electromagnetic devices: state-of-the-art and generalization,” Electrical Engineering & Electromechanics, No. 3, pp. 29–35, 2013.
[2] O. Bíró and K. Preis, “On the use of the magnetic vector potential in the finite element analysis of three-dimensional eddy currents,” IEEE Trans. Magn., vol. 25, No. 4, pp. 3145–3159, July 1989.
[3] J. P. Holman, Heat Transfer, New York, NY: McGraw-Hill, 2002.
[4] S. Timoshenko and J. N. Goodier, Theory of Elasticity, New York, NY: McGraw-Hill, 1951.
[5] P. Sharifi and D. N. Yates, “Nonlinear thermo-elastic-plastic and creep analysis by the finite-element method”, AIAA Journal, vol. 9, pp. 1210–1215, 1974.
[6] I. Doležel, P. Karban, B. Ulrych, M. G. Pantelyat, Yu. I. Matyukhin, and P. P. Gontarowsky, “Numerical model of a thermoelastic actuator solved as a coupled contact problem”, COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, vol. 26, pp. 1063–1072, 2007.
[7] M. G. Pantelyat and N. G. Shulzhenko, “On approximation for magnetization curves”, in Proc. 12th Int. IGTE Symp. Numerical Field Calculation in Electrical Engineering, Graz, Austria, Sept. 2006, pp. 96–99.
[8] J. Zgraja, M. G. Pantelyat, “Induction heating of large steel disks: coupled electromagnetic, thermal and mechanical simulation”, International Journal of Applied Electromagnetics and Mechanics, vol. 10, pp. 303–313, 1999.
[9] G. B. Kumbhar and S. V. Kulkarni, “Applications of coupled field formulations to electrical machinery”, COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, vol. 26, pp. 489–523, 2007.
[10] S. C. Bhargava, “Negative-sequence currents, losses and temperature rise in the rotor of a turbogenerator during transient unbalanced operation”, Electric Machines and Power Systems, vol. 8, pp. 155–168, 1983.
[11] L. C. Meng, K. W. E. Cheng, and P. C. K. Luk, “Field analysis of an induction cooker with square 9-coil system by applying diverse exciting pattern”, in Proc. 6th IET Int. Conf. Power Electronics, Machines and Drives (PEMD 2012), Bristol, United Kingdom, March 2012, pp. 1-5.
[12] R. Stancheva and I. Iatcheva, “Coupled electromagnetic and temperature field distribution in the end region of a large turbine generator under different operating conditions”, in Proc.10th Int. IGTE Symp. Numerical Field Calculation in Electrical Engineering, Graz, Austria, Sept. 2002, pp. 331–335.
[13] http://www.system-integration.at/system-integration/news/news-single/article//elefant-2d/. Access date: 2016-04-20.