Recent Developments of Electrical Drives - Part 39 pps

... 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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... 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 End Winding of Turbo Generators A. G...

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... (eds.), Recent Developments of Electrical Drives, 1 2. C  20 06 Springer. 2 Introductory Remarks harmonics in PM motors. The technique that consists on the choice of an appropriate number of magnet ... 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-...

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... Hitachi Ltd., 3- 1 -1 , Saiwaicho, Hitachi, Ibaraki 31 7-8 511, Japan kenichi hattori@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, Japan mogi@re.nsc.co.jp 4 Flat Products Division, Nippon Steel Corp., 6 -3 , Otemachi, 2-chome, Chiyoda-ku, Tokyo 10 0-8 071, Japan 5 Yawata Works,...

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... 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-axis flux consist of the combine action of magnets, d-axis current and q-axis current. The effect of I...

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... University of Lodz, Poland, ul. Stefanowskiego 18/22, 9 0 -9 24 Lodz, Poland prembowski@poczta.onet.pl, apelikan@mail.p.lodz.pl Abstract. The numerical model for three-dimensional field analysis of electrostatic ... with big asymmetries of the air gap in the electrostatic microactuators, especially with ferroelectrics. S. Wiak, M. Dems, K. Kom ˛ eza (eds.), Recent Developments of...

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... node i. j+n+1 i+k+2 j+n j i i+k j+n-i i+k-1 j+n-2 j-1 j-2 i-1 i-2 i+2 i+1 Figure 4. Part of the one level(z =const.) of the mesh with the overlappingregion(parts of electrodes dashed, dimensions ... enlarge)—symmetrical air gap. I-7. Analysis of Electrostatic Microactuators 77 j+n+1 i+k+2 j+n j i i+k j+n-i i+k-1 j+n-2 j-1 j-2 i-1 i-2 i+2 i+1 Figure 5. Part of the one level(z =co...

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... magnitude of torque ripple by the use of a relatively simple time-domain model. S. Wiak, M. Dems, K. Kom ˛ eza (eds.), Recent Developments of Electrical Drives, 93–100. C  2006 Springer. I-8. Coupled ... extent of the effect of supplying a motor from a non-sinusoidal source [1–3]. Of these, methods which are based on frequency domain analysis yield results which provide no...

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... Kulig Institute of Electrical Drives and Mechatronics, University of Dortmund, D-44227 Dortmund, Germany, arne.gruening@uni-dortmund.de, stefan.kulig@uni-dortmund.de Abstract. Numerical methods of calculating ... investigation, which was performed by a team of mechanical and electrical engineers over a period of about five years, concerned with the development and coupling of...

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... angle of anIPMSM as a function of in the case ofneglecting the presence of multiple saliencies. In most estimators the influence of multiple saliencies on the current response is consid- ered ... period and the gains must be recalculated. S. Wiak, M. Dems, K. Kom ˛ eza (eds.), Recent Developments of Electrical Drives, 155–164. C  2006 Springer. 156 Hanamoto et al. Thus, the ex...

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... the analysis of an induction machine operation. Some exceptions in which linear cascade rotor S. Wiak, M. Dems, K. Kom ˛ eza (eds.), Recent Developments of Electrical Drives, 247 260 . C  2006 ... G. ˇ Stumberger 1 1 Faculty of Electrical Engineering and Computer Science, University of Maribor, Smetanova 17, SI-2000 Maribor, Slovenia dolinar@uni-mb.si 2 Ørsted DTU Automation...

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... M e dynamics. Thankstothe predictiveabilities of motorpowerfeedforwardloop a betterdc-linkvoltage stabilization can be obtained. Also, fluctuations of dc-voltages may be reduced. Dc-link capacitor design In AC/DC/AC ... there is no control of the dc-link voltage in particular during transients (Fig. 10). So that, the size of the capacitor should be grater than in a converter with PWM r...

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... stochastic wind. But, the integration of wind S. Wiak, M. Dems, K. Kom ˛ eza (eds.), Recent Developments of Electrical Drives, 385 396 . C  2006 Springer. III-2.3. Maximum Wind Power Control in ... approach of control, we study the opti- mization of the quality of the energy produced in remote area by the wind diesel hybrid system (stability of voltage and frequency). Incr...

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... use of much less number of FE elements without significant accuracy loss, namely in the bar maximum temperatures. S. Wiak, M. Dems, K. Kom ˛ eza (eds.), Recent Developments of Electrical Drives, ... thick color lines. III-3.1. EQUIVALENT THERMAL CONDUCTIVITY OF INSULATING MATERIALS FOR HIGH VOLTAGE BARS IN SLOTS OF ELECTRICAL MACHINES P.G. Pereirinha 1,2 and Carlos Lemos Ant...

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... B-H CURVE AND TAKING INTO ACCOUNT ZERO-SEQUENCE FLUX B. Kawkabani and J J. Simond Laboratory for Electrical Machines, Swiss Federal Institute of Technology, EPFL-STI-ISE-LME, ELG Ecublens, CH-1015 ... The size of elements must be small enough to provide sufficient accuracy. In this way the differential S. Wiak, M. Dems, K. Kom ˛ eza (eds.), Recent Developments of Electrical Driv...

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