VOLTAGE SENSORLESS BASED VIRTUAL FLUX CONTROL OF THREE LEVEL NPC BACK-TO-BACK CONVERTER DFIGUNDER GRID FAULT
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Date
2019-11-25
Journal Title
Journal ISSN
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Publisher
جامعة الوادي - university of el oued
Abstract
In this paper, a harmonic elimination of grid and stator currents of doubly
fed induction generator (DFIG) in case of grid fault without line voltage sensors is
proposed . This can be achieved by compensating power based on virtual flux voltage
sensorless technique. Direct power control with space vector modulation (DPC-SVM) is
used to control both grid-side (GSC)and rotor-side converters (RSC). To achieve the
control objective, compensated active and reactive powers are calculated based on virtual
flux technique with balanced and harmonic free current as a control target. A theoretical
analysis of active and reactive powers under unbalanced voltage source is clearly
demonstrated and the effect of grid fault on the performance of DFIG is profoundly
discussed. Simulation results verified the effectiveness of the modified control strategy
Description
Article
Keywords
DFIG,DPC-SVM, virtual flux, compensating power, grid fault
Citation
Merzou, Imad . Mohamed, k. Rezaoui, Mounir. Bessous ,Noureddine. Gafazi ,Abdsalem.VOLTAGE SENSORLESS BASED VIRTUAL FLUX CONTROL OFTHREE LEVEL NPC BACK-TO-BACK CONVERTER DFIGUNDER GRID FAULT. International Journal of Energetica. Vo4. No 02.25/11/2019.faculty of technology. university of el oued. [visited in ../../….]. available from [copy the link here]