EPE Journal, "European Power Electronics and Drives", Volume 12, N° 1, 2002.
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Fiche : [REVUE285]
Titre : EPE Journal, European Power Electronics and Drives, Volume 12, N° 1, 2002.
Cité dans : [DIV322] Les revues EPE Journal et EPE Newsletter, février 2011.
Cité dans : [DIV007] Classement par type de Congrés et de revues IEEE, avril 2003.
Volume : 12
Numero : 1
Date : 2002
Site_web : http://www.epe-association.org/
Stockage :
Vers : Editorial
Vers : Control
Vers : Power Electronics in Transportation of Electrical Energy
Vers : System Engineering
Vers : News
Vers : Events
A letter from America
Tore M. Undeland
Space vector PWM control of dual inverter fed open-end winding induction motor drive
E. G. Shivakumar, K. Gopakumar, S. K. Sinha, A. Pittet, V. T. Ranganathan, Dept. EE, CEDT, Indian Institute of Science, Bangalore, India
Abstract : The technique of space vector PWM control of dual voltage source
inverter fed three phase open-end winding induction motor is presented in
this paper. A space vector PWM technique is developed based on the
combination of space vectors from dual inverters feeding the induction
motor from both ends (open-end winding without neutral point). A total of
64 voltage space vector combinations are available for PWM voltage control
of the inverter fed machine with open-end winding. A space phasor based
PWM scheme is proposed with minimum number of switching in a cycle per
inverter coupled with equal number of switching for each inverter. All the
voltage space vector combinations are utilized for generating the
reference voltage vector to cover the entire speed range. The open-end
winding structure can have significant third harmonic currents unless
suitable third harmonic filters are used to suppress it. The third
harmonic currents are suppressed by using isolated transformers for both
inverters.
Active filtering of supply voltage with series-connected voltage source converter
A. Sannino and J. Svensson, Dept. of Electric Power Engineering, Chalmers University of Technology, Gothenbourg, Sweden
Abstract : In this paper, a static series compensator for voltage sag
mitigation is completed with a voltage active filtering function for
further power quality improvement. The control system developed here
performs isolation of voltage harmonics in several rotating coordinate
systems, thus being able to cancel (or reduce) only selected harmonics, if
desired. Moreover, it compensates for the effect of the converter output
filter, which is frequency-dependent. Simulated results confirm the
capability of the device to cancel symmetrical and unsymmetrical
harmonics. Moreover, it is shown by using actual voltage sag recordings
that the addition of the active filtering feature does not affect the
speed of response during transients.
Evaluation of high power converters by the opposition method
Ch. Turpin, F. Richardeau, Th. Meynard, F. Forest, INP-ENSEEIHT, LEEI, Toulouse, France
Abstract : To test and to characterise in terms of losses high power
converters is never easy because loads and input sources adap-ted to the
commutated power are necessary. In this paper, the authors propose to
study the opposition method which avoids this problem. It offers a very
good accuracy for measurement of losses. Its principle and its main
properties are presented. The calculations of the theoretical losses in
the opposition method are shown. Moreover a method to choose the smoothing
inductor, a crucial point, is proposed. This method is applied to the
multicell multilevel inverters: two identical 1800V-200A-16kHz hard
switched 3-cell/4-level inverter legs are opposed.
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