caa a22 4500 463206622 CHVBK 20180405153128.0 cr unu---uuuuu 170326e20070301xx s 000 0 eng 10.1007/s00202-006-0002-x doi (NATIONALLICENCE)springer-10.1007/s00202-006-0002-x Performance of Three-Phase Motors after Disconnecting Damaged Coils [Elektronische Daten] [Kai Brune, Hans Seinsch] Despite the high quality of modern insulation systems, winding faults still represent the most frequent reason of outages of rotating electrical machines. When the damage is localized at one coil or a few adjacent coils, the user wishes to investigate the possibility of a provisional repair, in order to continue operation at least for a limited period of time. Up to now no reliable tools are available to predict the performance of a motor when one or more coils are disconnected from the winding train. This paper offers a new calculation method for all important performance characteristics (constant and pulsating torques, losses, current distribution, unbalanced magnetic pull) in case of winding asymmetries. The scheme covers all types of three-phase windings and all possible connection versions. The correctness of the computation results is thoroughly examined by many tests. Springer-Verlag, 2006 Winding faults nationallicence Winding asymmetry nationallicence Cut out coils nationallicence Disconnection of winding branches nationallicence Current distribution nationallicence Harmonic torques nationallicence Pulsating torques nationallicence Unbalanced magnetic pull nationallicence Brune Kai A&D LD TD2, Siemens AG, Vogelweiher Str. 1 - 15, 90441, Nürnberg, Germany aut Seinsch Hans Institut für Antriebssysteme und Leistungselektronik, Universität Hannover, Welfengarten 1, 30167, Hannover, Germany aut Electrical Engineering Springer-Verlag 89/4(2007-03-01), 271-283 0948-7921 89:4<271 2007 89 202 https://doi.org/10.1007/s00202-006-0002-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00202-006-0002-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Brune Kai A&D LD TD2, Siemens AG, Vogelweiher Str. 1 - 15, 90441, Nürnberg, Germany aut NATIONALLICENCE 700 1- Seinsch Hans Institut für Antriebssysteme und Leistungselektronik, Universität Hannover, Welfengarten 1, 30167, Hannover, Germany aut NATIONALLICENCE 773 0- Electrical Engineering Springer-Verlag 89/4(2007-03-01), 271-283 0948-7921 89:4<271 2007 89 202 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer