Recent Developments of Electrical Drives - Part 29 pdf
Recent Developments of Electrical Drives - Part 29 pdf
... al.
-8
-7
-6
-5
-4
-3
-2
-1
0
0 0,05 0,1 0,15 0,2
measured
calculated
times [s]voltage [V]
Figure 13. The voltage induced in open winding vs. time at DC voltage value 63.05 V.
-1 9
-1 7
-1 5
-1 3
-1 1
-9
-7
-5
-3
-1
1
0 ... Wiak, M. Dems, K. Kom
˛
eza (eds.), Recent Developments of Electrical Drives, 275–289.
C
2006 Springer....
Recent Developments of Electrical Drives - Part 8 pdf
... 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 also
see the effect of decreasing of magnet thickness.Reluctanceand ... expected.
ThereissignificantdifferenceoftorquesbetweenV-and U-shapeAdesigns. Thisis shown
in the Fig. 12. With the U-shapeA design, the oscillation of torque is with the fre...
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
... 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....
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 ... wide-speed operation with high torque capa-
bility isdeveloped.Thedouble-layer IPM rotor designisaccountedforIPMSMs requiring
S. Wiak, M. Dems, K. Kom
˛
eza (eds.), Recent Developments of...
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. ... Hitachi, Ltd., 7-1 -1 , Omikacho, Hitachi, Ibaraki 31 9-1 292 , Japan
anakaha@gm.hrl.hitachi.co.jp, takahiko@gm.hrl.hitachi.co.jp
2
Hitachi Works, Power Systems, Hitachi Lt...
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
... 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...
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 critica...
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 ... experimental
results of V-shape design. It can be seen that calculation of V-shape design gives a correct
Figure 6. Packing of flux with nominal load and new design...
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