THERMAL SCIENCE
International Scientific Journal
THERMAL ANALYSIS OF A CORELESS AXIAL FLUX PERMANENT MAGNET MACHINE
ABSTRACT
The article deals with numerical analysis of a double sided coreless axial flux permanent magnet machine with two rotor disks and a coreless stator. Coreless stator represents copper windings which are held together by epoxy raisin, therefore a special focus has to be given to the stator temperature. In this article a numerical analysis is presented, which is based on the copper losses, namely the I2R product, where the resistance of the copper windings was both calculated as well as measured in the prototype machine.
KEYWORDS
PAPER SUBMITTED: 2022-01-18
PAPER REVISED: 2022-02-06
PAPER ACCEPTED: 2022-03-08
PUBLISHED ONLINE: 2022-07-09
THERMAL SCIENCE YEAR
2022, VOLUME
26, ISSUE
Issue 6, PAGES [4809 - 4818]
- Danang Wijaya, F., Rahadyan, N. A., Ali, H. R., Magnetic flux distribution due to the effect of stator-rotor configuration in the axial machine, Proc. - 2014 6th Int. Conf. Inf. Technol. Electr. Eng. Leveraging Res. Technol. Through Univ. Collab. ICITEE 2014, no. d, 2015.
- Ekram, S., A novel windmill generator, Proc. - 12th Int. Conf. Electr. Mach. Syst. ICEMS 2009, 2009.
- Pop, A., Gillon, F., Radulescu, M. M., Modeling and permanent-magnet shape optimization of an axial-flux machine, Proc. - 2012 20th Int. Conf. Electr. Mach. ICEM 2012, no. c, pp. 357-363, 2012.
- Cao, Y., Yu, L., Jia, H., Rotor mechanical stress and deformation analysis of coreless stator axial-flux permanent magnet machines, 2015 IEEE Magnetics Conference (INTERMAG), Beijing, 2015, pp. 1-1.
- Wei, X., Yang, K., Research of stator displacement technique in multistage axial-flux permanent magnet machines, 2015 IEEE Magnetics Conference (INTERMAG), Beijing, 2015, pp. 1-1.
- Caricchi, F., Crescimbini, F., Mezzetti, F., Santini, E., Multistage axial-flux pm machine for wheel direct drive, IEEE Trans. Ind. Appl., vol. 32, no. 4, pp. 882-888, 1996.
- Daghigh, A., Javadi, H., Torkaman, H., Improved design of coreless axial flux permanent magnet synchronous generator with low active material cost, The 6th Power Electronics, Drive Systems & Technologies Conference (PEDSTC2015), Tehran, 2015, pp. 532-537.
- Gieras, J.F., Wang, R.J., Kamper M.J., Axial Flux Permanent Magnet Brushless Machines, Kluwer Academic Publishers, Dordrecht, 2004.
- Virtic, P., Pisek, P., Marcic, T., Hadziselimovic, M., Štumberger, B., Analytical Analysis of Magnetic Field and Back Electromotive Force Calculation of an Axial-Flux Permanent Magnet Synchronous Generator With Coreless Stator, IEEE Trans. Magn., vol. 44, no. 11, pp. 4333-4336, Nov. 2008.
- Lombard, N., Kamper, M., Analysis and performance of an ironless stator axial flux PM machine, IEEE Trans. Energy Convers., vol. 14, no. 4, pp. 1051-1056, Dec. 1999.
- Javadi, S., Mirsalim, M., A coreless axial-flux permanent-magnet generator for automotive applications, IEEE Trans. Magn., vol. 44, no. 12, pp. 4591-4598, 2008.
- Chen, A., Nilssen, R., Nysveen, A., Performance comparisons among radial flux, multi-stage axial flux and three-phase transverse flux pm machines for downhole applications, 2009 IEEE Int. Electr. Mach. Drives Conf. IEMDC '09, pp. 1010-1017, 2009.
- Hanselman, D. C., Brushless Permanent Magnet Motor Design, McGraw-Hill, New York, USA, 2003
- Howey, D.A., Childs, P.R.N., Holmes, A.S., Air-gap convection in rotating electrical machines, IEEE Trans. Ind. Electron., vol. 59, no. 3, pp. 1367-1375, Mar. 2012.
- Howey, D.A., Holmes, A.S., Pullen, K.R., Measurement of stator heat transfer in air-cooled axial flux permanent magnet machines, Proc. IEEE Annu. Conf. 35th Ind. Electron., Porto, Portugal, Nov. 3-5, 2009, pp. 1197-1202.
- Jussila, H.K., Mityakov, A.V., Sapozhnikov, S.Z., Mityakov, V.Y., Pyrhönen, J., Local Heat Flux Measurement in a Permanent Magnet Motor at No Load, IEEE Transactions on Industrial Electronics, vol. 60, no. 11, pp. 4852-4860, Nov. 2013
- Chai, F., Bi, Y., Chen, L., Thermal Investigation and Cooling Enhancement of Axial Flux Permanent Magnet Motors for Vehicle Applications, 2019 22nd International Conference on Electrical Machines and Systems (ICEMS), 2019, pp. 1-5
- Le, W., Lin, M., Jia, L., Wang, S., A Cooling Enhanced Method for Axial Flux Permanent Magnet Synchronous Machine, 2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD), 2020, pp. 1-2
- Pranjić, F., Virtič, P., Designing Rotor Disks of a Coreless Axial Flux Permanent Magnet Machines by Using Simplified FEM and an Approximation Method, IEEE Transactions on Energy Conversion, vol. 35, no. 3, pp. 1505-1512, Sept. 2020
- CFD Online, www.cfd-online.com/Wiki/Y_plus_wall_distance_estimation