Recent Developments of Electrical Drives - Part 21 ppt
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...
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 End
Winding of Turbo Generators
A. G...
Recent Developments of Electrical Drives - Part 2 docx
... (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-...
Recent Developments of Electrical Drives - Part 3 ppt
... 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,...
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...
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-axis
flux consist of the combine action of magnets, d-axis current and q-axis current. The effect
of I...
Recent Developments of Electrical Drives - Part 6 doc
... Wave data has been collected
S. Wiak, M. Dems, K. Kom
˛
eza (eds.), Recent Developments of Electrical Drives, 39–49.
C
20 06 Springer.
42 Mueller et al.
F
gen
F
wave
x(t)
(i,x)
desire
d
Î
i(t)
Generator ... emulator.
36 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...
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 45
150
100
50
-5 0
-1 00
-1 50
0 ... densities of V-shape and U-shapeA designs produced only by magnets in the stator
teeth with different rotor angles.
Figure 9. Total three-phase output power.
4000
3000...
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...
Recent Developments of Electrical Drives - Part 21 ppt
... effect ofmagnetostriction and stress-dependentmagnetostriction
on the vibrations of an induction motor.
S. Wiak, M. Dems, K. Kom
˛
eza (eds.), Recent Developments of Electrical Drives, 201 210 .
C
2006 ... 0.760
II-6. EFFECT OF STRESS-DEPENDENT
MAGNETOSTRICTION ON VIBRATIONS
OF AN INDUCTION MOTOR
A. Belahcen
Laboratory of Electromechanics, Helsinki University of Technolog...
Recent Developments of Electrical Drives - Part 24 ppt
... Kom
˛
eza (eds.), Recent Developments of Electrical Drives, 225–236.
C
2006 Springer.
II-7. Comparison of Stator- and Rotor-Force Excitation 223
The results show that the direction of the rotation ... sound.
Conclusion
In this paper the structure- and air-borne noise of an induction machine with squir rel-cage
rotor are estimated.
Forthis, different types of surface-forceex...
Recent Developments of Electrical Drives - Part 27 ppt
... better control of the power flow the fluctuation of the dc-link voltages will be
decrease. So the size of the dc-link capacitor can be reduced.
II-10. Impact of Magnetic Saturation of Induction Motor ... saturation modelling in d-q axis models of induction
machines, IEEE Trans. Energy Convers., Vol. 10, No. 3, pp. 455–461, 1995.
[4] E. Levi, Impact of cross-saturation on accuracy...
Recent Developments of Electrical Drives - Part 31 ppt
... disposition);
S. Wiak, M. Dems, K. Kom
˛
eza (eds.), Recent Developments of Electrical Drives, 307–320.
C
2006 Springer.
III-1.1. Design and Manufacturing of Steel-Cored PMLSM 301
Figure 6. Optimal design ... validity of sets of the design variables under
III-1.1. Design and Manufacturing of Steel-Cored PMLSM 305
Figure 11. Running characteristics of designed motor.
Figur...
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...
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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