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Five-level PWM current rectifier – Five-level NPC VSI – Permanent magnet synchronous machine cascade

Published online by Cambridge University Press:  28 January 2005

R. Chibani  and
E. M. Berkouk
R. Chibani*
Affiliation:
Laboratoire de commande des processus, École Nationale Polytechnique, 10 rue Hassen Badi, El Harrach, BP 182, Alger, Algeria
E. M. Berkouk
Affiliation:
Laboratoire de commande des processus, École Nationale Polytechnique, 10 rue Hassen Badi, El Harrach, BP 182, Alger, Algeria
*
[email protected] [email protected]
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Abstract

The aim of this paper is to give a solution to unbalance problem of the input DC voltages of the five-level NPC-VSI used in high voltage and great power applications. For that, a Five-level PWM current rectifier – Five-level NPC VSI – PMSM cascade is presented. In the first part, we develop a knowledge model of the five-level NPC VSI and propose a space vector modulation of this converter using four bipolar carriers. The characteristics of this strategy are studied and the performances of the drive of the PMSM fed by this inverter are presented too. In the first case the input DC voltages of the multilevel inverter are supposed constant and equals. After that, we propose to study a new high voltage cascade five-level PWM current rectifier – Five-level NPC VSI – PMSM. This study shows particularly the problem of the stability of the DC voltages of the inverter and its consequence on the performances of the PMSM speed control. Then, we propose a solution to the problem by employed closed loop regulation using sliding mode. We add a Clamping bridge to stabilise the four DC input voltages of the Five-level NPC VSI. This cascade found applications in great power and high voltage fields as electrical traction.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 30 , Issue 2 , May 2005 , pp. 135 - 148
Copyright
© EDP Sciences, 2005

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References

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