DocumentCode :
3449634
Title :
Enslavement and control of the multi DC-bus link voltages using adaptive fuzzy
Author :
Bouchafaa, F. ; Beriber, D. ; Boucherit, M.S. ; Berkouk, E.M.
Author_Institution :
Lab. of Instrum., Univ. of Sci. & Technol. Houari Boumediene, Algiers, Algeria
fYear :
2009
fDate :
1-3 July 2009
Firstpage :
1
Lastpage :
7
Abstract :
Voltage-source multilevel inverters have become very attractive for power industries in power electronics applications during last years. The main purposes that have led to the development of the studies about multilevel inverters are the generation of output voltage signals with low harmonic distortion; the reduction of switching frequency. A serious constraint in a multilevel inverter is the capacitor voltage-balancing problem. The unbalance of different DC voltage sources of five-level neutral point clamping (NPC) voltage source inverter (VSI) constitutes the major limitation for the use of this new power converter. In order to stabilize these DC voltages, we propose in this paper to study the cascade constituted by three phases five-level PWM rectifier, a clamping bridge and five-level NPC (VSI). In the first part, we present a topology of five-level NPC VSI, then they propose a model of this converter and an optimal PWM strategy to control it using four bipolar carriers. Then in the second part, we study a five-level PWM rectifier, which is controlled by a multiband hysteresis strategy. In the last part of this paper, the authors study shows particularly the problem of the stability of the multi DC voltages of the inverter and its consequence on the performances of the induction motors (IM). Then, we propose a solution to the problem by employed closed loop regulation using PI regulator type fuzzy logic controller (FLC). The results obtained with this solution confirm the good performances of the proposed solution, and promise to use the inverter in high voltage and great power applications as electrical traction.
Keywords :
PI control; PWM invertors; PWM rectifiers; bridge circuits; closed loop systems; fuzzy control; harmonic distortion; induction motors; machine control; power conversion harmonics; switching convertors; PI regulator; adaptive fuzzy logic controller; clamping bridge; closed loop regulation; five-level NPC VSI topology; five-level neutral point clamping; harmonic distortion; induction motors; multi DC-bus link voltages; multiband hysteresis strategy; power converter; power electronics; power industries; switching frequency; three phase five-level PWM rectifier; voltage-source multilevel inverter; Adaptive control; Clamps; Fuzzy control; Power electronics; Power industry; Programmable control; Pulse width modulation; Pulse width modulation inverters; Rectifiers; Voltage control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Advanced Electromechanical Motion Systems & Electric Drives Joint Symposium, 2009. ELECTROMOTION 2009. 8th International Symposium on
Conference_Location :
Lille
Print_ISBN :
978-1-4244-5150-0
Electronic_ISBN :
978-1-4244-5152-4
Type :
conf
DOI :
10.1109/ELECTROMOTION.2009.5259075
Filename :
5259075
Link To Document :
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