DocumentCode :
3509499
Title :
Impedance shaping of three-phase grid-parallel voltage-source converters
Author :
Céspedes, Mauricio ; Sun, Jian
Author_Institution :
Dept. of Electr., Comput. & Syst. Eng., Rensselaer Polytech. Inst., Troy, NY, USA
fYear :
2012
fDate :
5-9 Feb. 2012
Firstpage :
754
Lastpage :
760
Abstract :
This paper presents techniques to shape the output impedance of three-phase voltage-source converters (VSC) used as inverters for grid integration of renewable energy and energy storage devices. The objective is to avoid harmonic resonance and other unintended interactions between the inverter and the grid impedance. For this purpose, the inverter is modeled by a positive-sequence and a negative-sequence output impedance. Shaping of the inverter output impedance is achieved through changes to various inverter control functions, including grid synchronization and current control. The trade-off between grid compatibility and inverter control performance is also discussed. Experimental results from a multi-converter system test-bed are presented to validate the analyses.
Keywords :
energy storage; invertors; power convertors; power grids; renewable energy sources; current control; grid impedance; grid integration; grid synchronization; harmonic resonance; inverter control function; inverter output impedance shaping; multiconverter system test-bed; negative-sequence output impedance; positive-sequence output impedance; renewable energy storage device; three-phase grid-parallel VSC; three-phase grid-parallel voltage-source converter; Current control; Feedforward neural networks; Gain; Harmonic analysis; Impedance; Inverters; Phase locked loops;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2012 Twenty-Seventh Annual IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4577-1215-9
Electronic_ISBN :
978-1-4577-1214-2
Type :
conf
DOI :
10.1109/APEC.2012.6165904
Filename :
6165904
Link To Document :
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