T. MEYNARD, M. FADEL, N. AOUDA, "Modeling of multilevel converters", IEEE Transactions on Industrial Electronics, Vol. 44, No. 3, June 1997, pp. 356-364.
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Titre : T. MEYNARD, M. FADEL, N. AOUDA, Modeling of multilevel converters, IEEE Transactions on Industrial Electronics, Vol. 44, No. 3, June 1997, pp. 356-364.

Cité dans : [DIV189]  Recherche sur l'auteur Thierry MEYNARD, mai 2003.
Auteur : Meynard, T.A. (Inst Natl Polytechnique, Toulouse, Fr)
Auteur : Fadel, M.
Auteur : Aouda, N.

Source : IEEE Transactions on Industrial Electronics
Volume : 44
Numéro : 3
Date : June 1997
Pages : 356 - 364
CODEN : ITIED6
ISSN : 0278-0046
Info : Document Type : Journal - Treatment Code : Theoretical - Language : English
Stockage : Thierry LEQUEU
Lien : private/MEYNARD1.pdf - 9 pages, 303 Ko.

Abstract :
In this paper, the imbricated cells multilevel converters are studied and modeled from a control view point.
These converters make use of several switches connected in a series, which allows using switches with reduced voltage
ratings; these low voltage switches have lower conduction losses and can switch at higher frequency.
In addition to this feature common to all converters using series connected switches, the control signals of multilevel converters can be phase shifted to increase the apparent switching frequency and improve the dynamic performances of the whole converter.It will be shown that a multilevel inverter leg, composed of p pairs of switches and p minus 1 capacitors, forms a multivariable nonlinear system that cannot be properly modeled by standard methods such as state-space averaging.The transient behavior of this system depends on the current harmonics and their phase shift with the different control signals.A specific model will be detailed, studied, and used to illustrate the properties of these converters.In particular, the natural balancing of the voltage across the switches will be demonstrated and the time constants involved in this process will be determined.(Author abstract)

Index_Terms : Converters, harmonic analysis, modeling, multi-level systems, power electronics, state-space methods, steady-state stability.

Accession_Number : 1997(33):1025 COMPENDEX


Bibliographie

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Références : 7 Refs.
REFERENCES
[1] : R. D. Middelbrook and S. Cuk, "A general unified approach to modeling switching converter power stages," in IEEE Power Electron. Specialists Conf. Rec., 1976, pp. 18–34.
[2] : V. Vorperian and S. Cuk, "Small signal analysis of resonant converter," in IEEE Power Electron. Specialists Conf. Rec., 1983, pp. 269–282.
[3] : C. Collomb, M. Fadel, Y. Cheron, "Analysis of dc/dc series resonant converter operating above natural frequency," Eur. Power Electron. Conf. Rec., Firenze, Italy, 1991 vol. 4, pp. 542–547.
[4] : S. Sanders, J. Noworolski, X. Liu, G. Verghese, "Generalized averaging method for power conversion circuits," IEEE Power Electron. Specialists onf. Rec., 1990, pp. 333–340.
[5] : T. A. Meynard and H. Foch, "Dispositif d´Electronique de conversion d’énergie électrique," Brevet Français 91.09582, July 1991; Dépot Int.P.C.T. (Eur., Jpn., USA, Canada) 92/00652, July 1992.
[6] : "Multilevel choppers for high voltage applications," Eur. Power Electron. J. vol. 2, pp. 45–50, Mar. 1992.
[7] : "Multilevel converters and derived topologies for high power conversion," in IECON’95, Orlando, FL, 1995, pp. 21–26.
  [1] :  [PAP158]  -------
  [2] :  [PAP158]  -------
  [3] :  [PAP158]  -------
  [4] :  [PAP158]  -------
  [5] :  [DIV277]  T.A. MEYNARD, H. FOCH, Brevet Français N° 91.09582, 25 Juillet 91, (Europe, Japon, USA, Canada) n°92/00652 du 8 Juillet 92.
  [6] :  [PAP458]  T.A. MEYNARD, H. FOCH, Multilevel choppers for high voltage applications, EPE Journal, Vol. 2, No. 1, pp. 45-50, 1992.
  [7] :  [PAP158]  -------


Autres informations

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Source : Industrial Electronics, IEEE Transactions on
Pages : 356 - 364
Date : June 1997
ISSN : 0278-0046
References : 7
CODEN : ITIED6
Accession_Number : 5610639

Abstract :
In this paper, the imbricated cells multilevel converters are
studied and modeled from a control viewpoint. These converters
make use of several switches connected in a series, which allows
using switches with reduced voltage ratings; these low voltage
switches have lower conduction losses and can switch at higher
frequency. In addition to this feature common to all converters
using series connected switches, the control signals of
multilevel converters can be phase shifted to increase the
apparent switching frequency and improve the dynamic performances
of the whole converter. It is shown that a multilevel inverter
leg, composed of p pairs of switches and p-1 capacitors, forms a
multivariable nonlinear system that cannot be properly modeled by
standard methods such as state-space averaging. The transient
behavior of this system depends on the current harmonics and
their phase shift with the different control signals. A specific
model is detailed, studied, and used to illustrate the properties
of these converters. In particular, the natural balancing of the
voltage across the switches is demonstrated and the time
constants involved in this process are determined.

Subject_terms :
power convertors; multilevel converters modeling; control
viewpoint; series connected switches; reduced voltage ratings;
low voltage switches; lower conduction losses; higher frequency
switching; control signals phase shift; dynamic performances;
multilevel inverter leg; multivariable nonlinear system;
state-space averaging; current harmonics; natural voltage
balancing; time constants; power electronics; harmonic analysis;
steady state stability


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