DocumentCode :
1194622
Title :
Evaluation of Current Controllers for Distributed Power Generation Systems
Author :
Timbus, Adrian ; Liserre, Marco ; Teodorescu, Remus ; Rodriguez, Pedro ; Blaabjerg, Frede
Author_Institution :
Corp. Res., ABB Switzerland Ltd., Baden-Daettwil
Volume :
24
Issue :
3
fYear :
2009
fDate :
3/1/2009 12:00:00 AM
Firstpage :
654
Lastpage :
664
Abstract :
This paper discusses the evaluation of different current controllers employed for grid-connected distributed power generation systems having variable input power, such as wind turbines and photovoltaic systems. The focus is mainly set on linear controllers such as proportional-integral, proportional-resonant, and deadbeat (DB) controllers. Additionally, an improved DB controller robust against grid impedance variation is also presented. Since the paper discusses the implementation of these controllers for grid-connected applications, their evaluation is made in three operating conditions. First, in steady-state conditions, the contribution of controllers to the total harmonic distortion of the grid current is pursued. Further on, the behavior of controllers in the case of transient conditions like input power variations and grid voltage faults is also examined. Experimental results in each case are presented in order to evaluate the performance of the controllers.
Keywords :
PI control; distributed power generation; electric current control; power generation control; power grids; current controllers; deadbeat controllers; grid current; grid impedance variation; grid-connected distributed power generation systems; linear controllers; photovoltaic systems; proportional-integral controllers; proportional-resonant controllers; wind turbines; Current controllers; current harmonic distortion; distributed power generation systems (DPGSs); grid faults; input power variations;
fLanguage :
English
Journal_Title :
Power Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8993
Type :
jour
DOI :
10.1109/TPEL.2009.2012527
Filename :
4801680
Link To Document :
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