Finite element models of electrical machines allow insights in electrothermal stresses which endanger the insulation system of the machine. This paper presents a thermal finite element model of a 3.7 kW squirrel-cage induction machine. The model resolves the conductors and the surrounding insulation materials in the stator slots. A set of transient thermal scenarios is defined and measured in the machine laboratory. These data are used to assess the finite element model.
ChapmanM.FrostN. and BruetschR., Insulation systems for rotating low-voltage machines, in: Conference Record of the 2008 IEEE International Symposium on Electrical Insulation, IEEE, 2008.
2.
PyrhönenJ.JokinenT. and HrabovcováV., Design Rotating Electrical Machines, John Wiley & Sons, 2013.
3.
Cigré Working Group A1 17. Guide of methods for determining the condition of stator winding insulation and their effectiveness in large motors. Conseil international des grands réseaux électriques, 2013. TB552.
4.
MadonnaV.GiangrandeP.MigliazzaG.ButicchiG. and GaleaM., A time-saving approach for the thermal lifetime evaluation of low-voltage electrical machines, IEEE Transactions on Industrial Electronics67(11) (2020), 9195–9205.
5.
NussbaumerP.VogelsbergerM.A. and WolbankT.M., Induction machine insulation health state monitoring based on online switching transient exploitation, IEEE Transactions on Industrial Electronics62(3) (2015), 1835–1845.
6.
MontanariG.C.MazzantiG. and SimoniL., Progress in electrothermal life modeling of electrical insulation during the last decades, IEEE Transactions on Electrical Insulation9(5) (2002), 730–745.
7.
ElspaßL.SchlegelS. and BärnklauH., Comparison of methods to detect thermomechanical ageing of the insulation system for rotating high-voltage machines, in: Proceedings of the Nordic Insulation Symposium, 2022, p. 27.
8.
BogliettiA.CavagninoA.StatonD.ShanelM.MuellerM. and MejutoC., Evolution and modern approaches for thermal analysis of electrical machines, IEEE Transactions on Industrial Electronics56(3) (2009), 871–882.
9.
MellorP.H.RobertsD. and TurnerD., Lumped parameter thermal model for electrical machines of TEFC design, in: IEE Proceedings B (Electric Power Applications), Vol. 138, IET, 1991, pp. 205–218.
10.
MezaniS.TakorabetN. and LaporteB., A combined electromagnetic and thermal analysis of induction motors, IEEE transactions on Magnetics41(5) (2005), 1572–1575.
11.
KralC.HaumerA. and BaumlT., Thermal model and behavior of a totally-enclosed-water-cooled squirrel-cage induction machine for traction applications, IEEE Transactions on Industrial Electronics55(10) (2008), 3555–3565.
12.
OtiS.E.AwahC.ChibuzoN. and OkoroO., Thermal modelling and analysis of a 10 HP induction machine using the lumped parameter approach, International Journal of Integrated Engineering13(6) (2021), 166–179.
13.
BouheraouaMAtigMBousbaineA and BenamroucheN., Electro-thermal coupled modeling of induction motor using 2D finite element method, Advances in Electrical & Computer Engineering21(2) (2021).
14.
SoualmiA.ZidatF.LombardP. and MokhtariN., Thermal study comparison of permanent magnets machines using finite element method (FEM) electric vehicles application, in: 2018 21st International Conference on Electrical Machines and Systems (ICEMS), 2018, pp. 59–64.
15.
DriesenJ.BelmansR.J. and HameyerK., Finite-element modeling of thermal contact resistances and insulation layers in electrical machines, IEEE Transactions on Industry Applications37(1) (2001), 15–20.
16.
ZhangY.RuanJ.HuangT.YangX.ZhuH. and YangG., Calculation of temperature rise in air-cooled induction motors through 3-D coupled electromagnetic fluid-dynamical and thermal finite-element analysis, IEEE Transactions on Magnetics48(2) (2012), 1047–1050.
17.
BundschuhJ.RuppertM.G. and Späck-LeigsneringY., Pyrit: A finite element based field simulation software written in Python. COMPEL - The international journal for computation and mathematics in electrical and electronic engineering. 2023; ahead-of-print(ahead-of-print).
18.
DriendlN.PauliF. and HameyerK., Influence of ambient conditions on the qualification tests of the interturn insulation in low-voltage electrical machines, IEEE Transactions on Industrial Electronics69(8) (2022), 7807–7816.
19.
EickhoffH.T.SeebacherR. and MuetzeA., Space harmonics and saturation interaction in fault-tolerant induction machine drives due to a zero-sequence stator current, in: IEEE Transactions on Industry Applications, 2021.
20.
H.T.Eickhoff, Fault-Tolerant Operation of Three-Phase Squirrel Cage Induction Machine Drives after Inverter Open Circuit Faults [Dissertation], 2020.
21.
In: DIN EN IEC 60751, Industrielle Platin-Widerstandsthermometer und Platin-Temperatursensoren (IEC 60751:2022): = Industrial platinum resistance thermometers and platinum temperature sensors (IEC 60751:2022). deutsche fassung en iec 60751:2022 ed. Deutsche Norm. Berlin: Beuth Verlag GmbH, 2023.
22.
VDI Heat Atlas. Springer, 2010.
23.
D’AngeloL. and De GersemH., Quasi-3-D finite-element method for simulating cylindrical induction-heating devices, IEEE Journal on Multiscale and Multiphysics Computational Techniques2 (2017), 134–141.
24.
BaranskiM.DemenkoA.LyskawinskiW. and SzelagW., Finite element analysis of transient electromagnetic-thermal phenomena in a squirrel cage motor, COMPEL-The International Journal for Computation and Mathematics in Electrical and Electronic Engineering30(3) (2011), 832–840.
25.
WrobelR.WilliamsonS.J.SimpsonN.AyatS.YonJ. and MellorP.H., Impact of slot shape on loss and thermal behaviour of open-slot modular stator windings, in: 2015 IEEE Energy Conversion Congress and Exposition (ECCE), 2015, pp. 4433–4440.
