Z-source-inverter-based flexible distributed generation system solution for grid power quality improvement

Gajanayake, Chandana Jayampathi, Vilathgamuwa, D. Mahinda, Loh, Poh Chiang, Teodorescu, Remus, & Blaabjerg, Frede (2009) Z-source-inverter-based flexible distributed generation system solution for grid power quality improvement. IEEE Transactions on Energy Conversion, 24(3), pp. 695-704.

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Distributed generation (DG) systems are usually connected to the grid using power electronic converters. Power delivered from such DG sources depends on factors like energy availability and load demand. The converters used in power conversion do not operate with their full capacity all the time. The unused or remaining capacity of the converters could be used to provide some ancillary functions like harmonic and unbalance mitigation of the power distribution system. As some of these DG sources have wide operating ranges, they need special power converters for grid interfacing. Being a single-stage buck-boost inverter, recently proposed Z-source inverter (ZSI) is a good candidate for future DG systems. This paper presents a controller design for a ZSI-based DG system to improve power quality of distribution systems. The proposed control method is tested with simulation results obtained using Matlab/Simulink/PLECS and subsequently it is experimentally validated using a laboratory prototype.

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ID Code: 72528
Item Type: Journal Article
Refereed: Yes
Keywords: Distributed generation (DG), Z-source inverter (ZSI), Power quality
DOI: 10.1109/TEC.2009.2025318
ISSN: 0885-8969
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2009 Institute of Electrical and Electronics Engineers
Deposited On: 05 Jun 2014 22:36
Last Modified: 09 Jun 2014 23:17

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