TY  - JOUR
A1  - Alebouyeh Samami, Behzad
A1  - Pieper, Martin
A1  - Breitbach, Gerd
A1  - Hodapp, Josef
T1  - Heat production in the windings of the stators of electric machines under stationary condition
JF  - Heat and mass transfer
N2  - In electric machines due to high currents and resistive losses (joule heating) heat is produced. To avoid damages by overheating the design of effective cooling systems is required. Therefore the knowledge of heat sources and heat transfer processes is necessary. The purpose of this paper is to illustrate a good and effective calculation method for the temperature analysis based on homogenization techniques. These methods have been applied for the stator windings in a slot of an electric machine consisting of copper wires and resin. The key quantity here is an effective thermal conductivity, which characterizes the heterogeneous wire resin-arrangement inside the stator slot. To illustrate the applicability of the method, the analysis of a simplified, homogenized model is compared with the detailed analysis of temperature behavior inside a slot of an electric machine according to the heat generation. We considered here only the stationary situation. The achieved numerical results are accurate and show that the applied homogenization technique works in practice. Finally the results of simulations for the two cases, the original model of the slot and the homogenized model chosen for the slot (unit cell), are compared to experimental results.
Y1  - 2014
U6  - http://dx.doi.org/10.1007/s00231-014-1371-8
SN  - 0947-7411 (Print) ; 1432-1181 (E-Journal)
VL  - 50
SP  - 1707
EP  - 1716
PB  - Springer
CY  - Heidelberg
ER  - 
TY  - JOUR
A1  - Dielmann, Klaus-Peter
A1  - Kramer, C.
T1  - Heißgasventilatoren für den Industrieofenbau / C. Kramer ; K.-P. Dielmann
JF  - Gaswärme international : Gasanwendung in Industrie und Gewerbe. 31 (1982), H. 10
Y1  - 1982
SN  - 0020-9384
SP  - 461
EP  - 467
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Ohler, C.
A1  - Daniels, C.
T1  - Heterojunction band offsets and Schottky-barrier heights: Tersoff’s theory in the presence of strain / C. Ohler ; C. Daniels ; A. Förster ...
JF  - Physical review / B, Condensed matter and materials physics. 58 (1998), H. 12
Y1  - 1998
SN  - 1095-3795
SP  - 7864
EP  - 7871
ER  - 
TY  - JOUR
A1  - Hoyler, Friedrich
A1  - Kessler, E. G.
A1  - Greene, G. L.
T1  - High accuracy, absolute wavelength determination of capture gamma-ray energies for E≤5 MeV and the direct determination of binding energies in light nuclei / E.G. Kessler ; G. L. Greene ... F. Hoyler
JF  - Journal of Physics G. 14 (1988), H. S
Y1  - 1988
SN  - 0305-4616
SP  - S167
EP  - S174
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Montanari, Simone
A1  - Lepsa, Mihail Ion
A1  - Lüth, Hans
T1  - High frequency investigation of graded gap injectors for GaAs Gunn diodes / Simone Montanari ; Arnold Förster ; Mihail Ion Lepsa ; Hans Lüth
JF  - Solid-state electronics. 49 (2005), H. 2
Y1  - 2005
SN  - 0038-1101
SP  - 245
EP  - 250
ER  - 
TY  - JOUR
A1  - Breitbach, Gerd
A1  - Deschka, S.
A1  - Akiba, M.
T1  - High heat flux tests on brazed divertor components in electron and ion beam test facilities / S. Deschka ;  M. Akiba ; G. Breitbach ...
JF  - International journal of refractory metals and hard materials. 11 (1992), H. 6
Y1  - 1992
SN  - 0263-4368
N1  - 2. ISSN (Druck-Ausg.): 0263-4368
SP  - 367
EP  - 375
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Brugger, H.
A1  - Meiners, U.
T1  - High quality GaAs-based resonant tunneling diodes for high frequency device applications / H. Brugger ; U. Meiners ; C. Wölk ... A. Förster ...
JF  - Proceedings : August 5 - 7, 1991, Cornell University, Ithaca, New York / R. J. Trew, General Chairman
Y1  - 1991
SN  - 0-7803-0491-8
N1  - Cornell Conference on Advanced Concepts in High Speed Semiconductor Devices and Circuits <1991, Ithaca, NY>
SP  - 39
EP  - ff.
PB  - Inst. of Electrical and Electronics Engineers
CY  - Piscataway, NJ
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Hu, Quing
A1  - Verghese, S.
T1  - High-frequency (f ~ 1 THz) studies of quantum-effect devices / Qing Hu ; S. Verghese ; R. A. Wyss ... A. Förster
JF  - Semiconductor science and technology. 11 (1996), H. 12
Y1  - 1996
SN  - 1361-6641
SP  - 1888
EP  - 1894
ER  - 
TY  - JOUR
A1  - Mohnke, Andreas
T1  - High-rate sputtering of zinc oxide with a funnel-shaped magnetic field: Effect of the target thickness on the layer properties
JF  - Vakuum-Technik. 36 (1987), H. 5
Y1  - 1987
SN  - 0042-2266
N1  - unter 63 ZS 073-1986/87 in der Bibliothek Jülich vorhanden
SP  - 148
EP  - 151
ER  - 
TY  - JOUR
A1  - Koller, R.
A1  - Stellberg, Michael
T1  - Hilfsmittel zum systematischen Konstruieren : Ordnen von Spannverbindungen
JF  - Industrie-Anzeiger. Bd. 109 (1987), H. 24
Y1  - 1987
SN  - 0019-9036
SP  - 28 - 29
EP  - 31 - 32
ER  -