Recent Developments of Electrical Drives - Part 30 docx
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 459Table 3. Comparison of results case of unsymmetrical ... iAin the case of no-load.Figure 7. Computed and measured primary current iBin the case of no-load.Figure 8. Computed and measured primary current iCin the case of no-load.III-3.5. Improved ... expressions are established for all the partial derivatives of inductances vs. themagnetic reluctances R1T, R2T,R3T of the cores.III-3.5. Improved Modeling of Three-Phase Transformer Analysis 453Figure...
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Recent Developments of Electrical Drives - Part 1 potx
... the Library of Congress.ISBN -1 0 1- 4 02 0-4 53 4-4 (HB)ISBN -1 3 97 8 -1 -4 02 0-4 53 4-9 (HB)ISBN -1 0 1- 4 02 0-4 53 5-2 (e-book)ISBN -1 3 97 8 -1 -4 02 0-4 53 5-6 (e-book)Published by Springer,P.O. Box 17 , 3300 AA ... Brochet and A. Randria 10 1 11 . Electromagnetic Forces and Mechanical Oscillations of the Stator EndWinding of Turbo GeneratorsA. Gr¨uning and S. Kulig 11 5 12 . Optimization of a Linear Brushless ... with modern electrical drives. Looking at the con-tent of the book of digests one may also notice that the more and more researchers gointo the investigation of new applications of computer...
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Recent Developments of Electrical Drives - Part 2 docx
... (eds.), Recent Developments of Electrical Drives, 1 2. C 20 06 Springer. 2 Introductory Remarksharmonics in PM motors. The technique that consists on the choice of an appropriatenumber of magnet ... insure ex-tended torque-speed envelope with maximum-torque-perstator-current operation rangebelow the base speed as well as constant-power flux-weakening and maximum-torque-perstator-flux operation ... die-cast in India for agri-pumpingS. Wiak, M. Dems, K. Kom˛eza (eds.), Recent Developments of Electrical Drives, 29 1 29 3.C 20 06 Springer.SECTIONIICONTROL, MEASUREMENTS,AND MONITORINGIntroductory...
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Recent Developments of Electrical Drives - Part 3 ppt
... Hitachi Ltd., 3- 1 -1 , Saiwaicho, Hitachi, Ibaraki 31 7-8 511, Japankenichihattori@pis.hitachi.co.jp, isao@keyaki.cc.u-tokai.ac.jp 3 Steel Research Laboratories, Nippon Steel Corp., 2 0-1 , Shintomi, ... Futtsu, Chiba 29 3- 8 511, Japanmogi@re.nsc.co.jp4Flat Products Division, Nippon Steel Corp., 6 -3 , Otemachi, 2-chome, Chiyoda-ku,Tokyo 10 0-8 071, Japan5Yawata Works, Nippon Steel Corp., 1-1 , Tobihatacho, ... AssessmentStudy of a 250MVA Air-CooledTurbo Generator”, International Electrical Machines and Drives Conference 20 03 (IEMDC 20 03) , June 1–4, 20 03, Madison, Wi.[4] K. Yamazaki,“StrayLoad Loss Analysisof InductionMotors...
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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.C2006 Springer.I-2. Losses in Large Hydro-generators 15By defining the N-dimensional vector oT= (1 1) we ... no-load losses of largesynchronous machines withsalient poles. Asshown in Fig. 4, aset of various machinesis taken into account.Optimization of theno-load electromagnetic lossesThe aim of ... models for the calculation of P3, P8, and P9.I-2. Losses in Large Hydro-generators 19Speed/rpm800600 40 020000 100 200 300 40 0Rated output/MVAFigure 4. Range of reference and test machines...
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Recent Developments of Electrical Drives - Part 5 ppsx
... Roebelstabwick-lung, Dissertation, TU-Wien, 2003.[14] M.T. Holmberg, “Three-dimensional Finite Element Computation of Eddy Currents in Syn-chronous Machines”, Technical Report No. 350 , Department of ... with the expected values of this reactance. We think this is because the d-axisflux consist of the combine action of magnets, d-axis current and q-axis current. The effect of Iq can be magnetizing ... consequence, the internal voltage of the motor rises proportionally to the rotorS. Wiak, M. Dems, K. Kom˛eza (eds.), Recent Developments of Electrical Drives, 25 37.C2006 Springer....
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Recent Developments of Electrical Drives - Part 6 doc
... Wave data has been collectedS. Wiak, M. Dems, K. Kom˛eza (eds.), Recent Developments of Electrical Drives, 39–49.C20 06 Springer.42 Mueller et al.FgenFwavex(t)(i,x)desiredÎi(t)Generator ... emulator. 36 P´erez-Donsi´onFigure 17. Graphic representation of the magnets and reluctance torques vs. time during a suddendecrease of the load.we can defined it like a set of critical combinations of ... Graphic representation of the torque of the squirrel cage vs. time for a sudden decrease of the load.I-3. Coupled Model for PMSM 35Figure 15. Graphic representation of the torque of the squirrel cage...
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Recent Developments of Electrical Drives - Part 7 ppt
... magnets.Figure 2. 12-pole PM motor design with magnets in V-shape.Figure 3. 12-pole PM motor design with magnets in U-shape in every second pole.I-4. Dynamic Modeling of VHM 4515010050 -5 0 -1 00 -1 500 ... densities of V-shape and U-shapeA designs produced only by magnets in the statorteeth with different rotor angles.Figure 9. Total three-phase output power.40003000200010000 -1 000 -2 000 -3 000 -4 000510152025Force ... experimentalresults of V-shape design. It can be seen that calculation of V-shape design gives a correctFigure 6. Packing of flux with nominal load and new design A (U-shapeA).I-5. FINITE ELEMENT ANALYSIS OF...
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Recent Developments of Electrical Drives - Part 8 pdf
... KolehmainenTable 2. Comparison of nominal load resultsMeasured Calculated Calculated CalculatedV-shape V-shape U-shapeA U-shapeBTn[Nm] 87 5 87 5 87 5 87 5In[A] 46.5 45.5 45 .8 45.4Cosω0.993 0.997 ... 45.4Cosω0.993 0.997 0.997 1.000η0.929 0.946 0.939 0.9 38 Angle 32.6 29.7 25.4Tk[Nm] 1, 688 1,557 1,4 18 Ik[A] 122.5 113 .8 98. 5Cosω0 .85 6 0 .84 1 0 .80 4Angle 114.1 111.5 99.2Magnets thickness 7.3 ... with V-shape than with U-shapeA design, because the mag-netic structure of rotor. By comparing torques of U-shapeA and U-shapeB designs can alsosee the effect of decreasing of magnet thickness.Reluctanceand...
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Recent Developments of Electrical Drives - Part 9 pps
... University of Lodz, Poland,ul. Stefanowskiego 18/22, 9 0 -9 24 Lodz, Polandprembowski@poczta.onet.pl, apelikan@mail.p.lodz.plAbstract. The numerical model for three-dimensional field analysis of electrostatic ... with big asymmetries of the air gap in theelectrostatic microactuators, especially with ferroelectrics.S. Wiak, M. Dems, K. Kom˛eza (eds.), Recent Developments of Electrical Drives, 73–83.C2006 ... the amplitude of the cogging torque. The slot-opening angle is less thanhalf a slot pitch τs.Assuming that the phase currents are function of the electrical rotor position θ (self-controlled...
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Recent Developments of Electrical Drives - Part 12 docx
... 0.188.599.51010.51111.5 12 12.513Tel [Nm]t [s]Figure 5. Torque ripple at full load (simulated).I-10. Permanent Magnet Synchronous Machine 1030 10 20 30 40 50 60 70 80 90 -1 -0 .8 -0 .6 -0 .4 -0 .200.20.40.60.81Amplitude ... data-processing tool MATLABR, makingpossible the determination of fast and simple prediction models of the acoustic noise.S. Wiak, M. Dems, K. Kom˛eza (eds.), Recent Developments of Electrical ... D’Ascq Cedex, Francestephane.vivier@ec-lille.fr, michel.hecquet@ec-lille.fr,ait-hammouda.amine@ec-lille.fr, pascal.brochet@ec-lille.fr, Bellemain.Napame@ec-lille.fr2Alstom—2 Av de Lattre de...
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Recent Developments of Electrical Drives - Part 18 docx
... the otherS. Wiak, M. Dems, K. Kom˛eza (eds.), Recent Developments of Electrical Drives, 165–176.C2006 Springer.II-3. Sensorless Rotor-Flux-Oriented Control Scheme 171Figure 6. Global estimation ... Fernandez21University of M´alaga, Electrical Engineering Department, Plaza El Ejido S/N 29013 Malaga, Spainmjduran@uma.es, jlduran@uma.es, fmperez@uma.es2University of Jaen, Electrical Engineering Department, ... control is presented that aims to improve some of the weaknesses of the sensorless vector control. Among indirect rotor-flux-oriented control (IRFOC),some of the aspects that can be improved are the...
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Recent Developments of Electrical Drives - Part 20 docx
... (eds.), Recent Developments of Electrical Drives, 187 200 .C 200 6 Springer.182 Muntean et al.low speed, have been recently reported [11,12]. The initial angular position of the statorflux-linkage ... flux-linkagehas been derived to be used in IPMSM DTC insuring maximum-torque-per-stator-currentoperation below the base speed as well as constant-power flux-weakening and maximum-torque-per-stator-flux ... al.Figure 3. Single-phase SRM lookup data.II-4. Wide-Speed Operation of Direct Torque-Controlled IPMSM 183ωrbcan be readily deduced from the steady-state IPMSM stator-voltage equations in...
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Recent Developments of Electrical Drives - Part 30 docx
... V.0,0E+05,0E-51,0E-41,5E-42,0E-42,5E-43,0E-40 0,002 0,004 0,006 0,008 0,01resistance [Ω]time [s]Figure 23. Equivalent resistance of the rotor bar vs. time.0,0E+01,0E-72,0E-73,0E-74,0E-75,0E-76,0E-70 ... sizing. Generally, capability of steel-coredS. Wiak, M. Dems, K. Kom˛eza (eds.), Recent Developments of Electrical Drives, 295 306 .C2006 Springer.II-12. Field-Circuit Finite Elements Models ... forverification of the designed model’s validity.Design of steel-cored PMLSMSteel-cored PMLSMFig. 1 shows the moving-coil type steel-cored PMLSM with the magnetic combination of four poles and...
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Recent Developments of Electrical Drives - Part 44 docx
... approachwhichleads toa betterintegration ofspeed reducingfunctionsin electric drives, the emergence of new needs to satisfy specifications of the high-effort-at-low-speed type,under moreand more severe ... Dems, K. Kom˛eza (eds.), Recent Developments of Electrical Drives, 435 442 .C2006 Springer.III-3.3. Electroactive Materials: Toward Novel Actuation Concepts 441 Figure 8. Standing wave ... Division 16,Kudan Building 2F, 1-5 -3 , Kudanminami, Chiyoda-ku, Tokyo 10 2-0 074, Japan.III-3.3. ELECTROACTIVE MATERIALS:TOWARD NOVEL ACTUATION CONCEPTSB. Nogarede, Jean-Fran¸cois Rouchon and Alexis...
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