| |
A new solution to the unbalance problem of the input DC voltages of a five levels NPC-VSI by using sliding mode regulation
| [View]
[Download]
|
| Author(s) |
R. Chibani; G. Manesse; E. M. Berkouk |
| Abstract |
The aim of this paper is to give a solution to unbalance problem of the input DC voltages of the five levels NPC-VSI used in high voltage and great power applications. For that, a Four two levels PWM current rectifiers – Five levels NPC VSI – PMSM cascade is presented. In the first part, we remind the model, we develop a knowledge model of the five levels NPC VSI and propose a sine triangle strategy 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 four two-levels PWM currents rectifiers – Five levels 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 This cascade found applications in great power and high voltage fields as electrical traction. |
| Download |
| Filename: | EPE-PEMC2002 - T1-062 - Chibani.pdf |
| Filesize: | 464.8 KB |
|
| Type |
Members Only |
| Date |
Last modified 2004-05-12 by System |
| |
 |