Recent Developments of Electrical Drives - Part 35 pptx
Recent Developments of Electrical Drives - Part 35 pptx
... “Comparison Between a Novel Claw-Pole Electrically Mag- netized Synchronous Machine Without Slip-Rings and a Permanent Magnet Machine”, IEEE International ElectricalMachines and DrivesConference, Madison, ... outer cylindrical surface of the yoke. The whole surface area of the end-plates was used to cool the copper losses of the d.c. winding (“Pcu2”) and the iron losses of the end-pla...
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Recent Developments of Electrical Drives - Part 14 pptx
... the middle of the involute part of the upper layer bar of the first coil of phase a of the two-pole generator, which has to sustain the largest electromagnetic forces during the three-phase terminal ... Institute of Electrical Machines and Drives: University of Hannover, 1996. [4] B. Frei-Spreiter,Ein BeitragzurBerechnung derKr¨afteimWickelkopfbereichgroßerSynchron- maschine...
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Recent Developments of Electrical Drives - Part 32 pptx
... winding; r the no. of teeth/cycle N tc and the no. of coils/cycle N cc must be multiple of the no. of phases N ph ; r links about no. of teeth/cycle-phase N tcph and no. of coils/cycle-phase N ccph :N tc = N ph N tcph ;N cc = ... e.m.f. It is particularly noticeable the absolute absence of slotting effects, in spite of the very low no. of slots/(pole-phase). The phase-to-neu...
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Recent Developments of Electrical Drives - Part 46 ppsx
... Transformer of 3 kVA: Distribution of the magnetic field in the case of no-load. III-3.5. Improved Modeling of Three-Phase Transformer Analysis 459 Table 3. Comparison of results case of unsymmetrical ... i A in the case of no-load. Figure 7. Computed and measured primary current i B in the case of no-load. Figure 8. Computed and measured primary current i C in the case of no...
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Recent Developments of Electrical Drives - Part 1 potx
... is available from the Library of Congress. ISBN-10 1-4 02 0-4 53 4-4 (HB) ISBN-13 97 8-1 -4 02 0-4 53 4-9 (HB) ISBN-10 1-4 02 0-4 53 5-2 (e-book) ISBN-13 97 8-1 -4 02 0-4 53 5-6 (e-book) Published by Springer, P.O. ... 83 v Recent Developments of Electrical Drives Best papers from the International Conference on Electrical Machines ICEM’04 Edited by S....
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Recent Developments of Electrical Drives - Part 2 docx
... insure ex- tended torque-speed envelope with maximum-torque-perstator-current operation range below the base speed as well as constant-power flux-weakening and maximum-torque- perstator-flux operation ... (eds.), Recent Developments of Electrical Drives, 1–2. C 2006 Springer. 2 Introductory Remarks harmonics in PM motors. The technique that consists on the choice of an appropriate...
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Recent Developments of Electrical Drives - Part 3 ppt
... Division, Nippon Steel Corp., 6-3 , Otemachi, 2-chome, Chiyoda-ku, Tokyo 10 0-8 071, Japan 5 Yawata Works, Nippon Steel Corp., 1-1 , Tobihatacho, Tobata-ku, Kitakyusyu, Fukuoka 80 4-8 501, Japan Abstract. ... than the steel sheets. S. Wiak, M. Dems, K. Kom ˛ eza (eds.), Recent Developments of Electrical Drives, 3–12. C 2006 Springer. I-1. Core Loss in Turbine Generators 7 R...
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Recent Developments of Electrical Drives - Part 4 ppt
... Wiak, M. Dems, K. Kom ˛ eza (eds.), Recent Developments of Electrical Drives, 13–23. C 2006 Springer. I-2. Losses in Large Hydro-generators 15 By defining the N-dimensional vector o T = (1 1) we ... no-load losses of largesynchronous machines withsalient poles. Asshown in Fig. 4, aset of various machines is taken into account. Optimization of theno-load electromagnetic losses...
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Recent Developments of Electrical Drives - Part 5 ppsx
... with the expected values of this reactance. We think this is because the d-axis flux consist of the combine action of magnets, d-axis current and q-axis current. The effect of Iq can be magnetizing ... between d-q axis circuits, or in other words, the magnetic effects on the d-axis flux caused by q-axis current, of course we can consider the influence on the q-axis flux motivated by d-a...
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Recent Developments of Electrical Drives - Part 6 doc
... Graphic representation of the torque of the squirrel cage vs. time for a sudden decrease of the load. I-3. Coupled Model for PMSM 35 Figure 15. Graphic representation of the torque of the squirrel cage ... P´erez-Donsi´on Figure 17. Graphic representation of the magnets and reluctance torques vs. time during a sudden decrease of the load. we can defined it like a set of criti...
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