Recent Developments of Electrical Drives - Part 41 potx
Recent Developments of Electrical Drives - Part 41 potx
... the stator cooling area is the same such as the warming of coils. The power-to-weight ratio of trapezoidal waveform machines is 28% higher than sinu- soidal machine but the magnets weight is 50% higher ... level of torque ripple is obtained for a magnet width equal to 90% of the pole pitch (Fig. 19). The trapezoidal waveform machine has 150% of the magnets volume but only 48% of t...
Ngày tải lên: 02/07/2014, 09:20
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....
Ngày tải lên: 02/07/2014, 09:20
Recent Developments of Electrical Drives - Part 16 potx
... (eds.), Recent Developments of Electrical Drives, 141 153. C 2006 Springer. II-1. High-Frequency Position Estimators 143 Figure 1. Magnetizing characteristicwith i mo and φ mo the average modulusof ... and Ren´e K. Boel Electrical Energy Laboratory (EELAB), Department of Electrical Energy, Systems and Automation (EESA), Ghent University (UGent), Sint-Pietersnieuwstraat 41, B...
Ngày tải lên: 02/07/2014, 09:20
Recent Developments of Electrical Drives - Part 33 potx
... range of airgap flux control to reduce or increase its value, this is made with low requirement of d-axis current. r This particular configuration allows us to control the level of excitation of the ... made over iron mostly. S. Wiak, M. Dems, K. Kom ˛ eza (eds.), Recent Developments of Electrical Drives, 321–334. C 2006 Springer. III-1.3. Axial Flux Surface Mounted PM Machin...
Ngày tải lên: 02/07/2014, 09:20
Recent Developments of Electrical Drives - Part 43 potx
... samples. 0,0E+00 2,0E-05 4,0E-05 6,0E-05 8,0E-05 1,0E-04 1,2E-04 1,4E-04 1,6E-04 1,8E-04 2,0E-04 1A 1B 2 3 4 5 AC-loss slope Meas slope 1.0*Cond FEM slope 1.0*Cond FEM slope 1.2*Cond Figure 11. AC-slopes—ring ... modifications. S. Wiak, M. Dems, K. Kom ˛ eza (eds.), Recent Developments of Electrical Drives, 423–433. C 2006 Springer. III-3.2. Loss Calculations for Soft Magnetic Comp...
Ngày tải lên: 02/07/2014, 09:20
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...
Ngày tải lên: 02/07/2014, 09:20
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...
Ngày tải lên: 02/07/2014, 09:20
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...
Ngày tải lên: 02/07/2014, 09:20
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...
Ngày tải lên: 02/07/2014, 09:20
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...
Ngày tải lên: 02/07/2014, 09:20