Cascade multilevel static synchronous compensator configuration for wind farms

Jayasingha, S.D.G., Vilathgamuwa, D. Mahinda, & Madawala, Udaya K. (2011) Cascade multilevel static synchronous compensator configuration for wind farms. IET Power Electronics, 4(5), pp. 548-556.

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Modulation and control of a cascade multilevel static synchronous compensator (STATCOM) configuration to improve the quality of voltage generated by wind power systems are presented. The proposed STATCOM configuration needs only four dc-link capacitors and 24 switches to synthesise nine-level operation. In addition to that, switching losses are further reduced by splitting the voltage source inverter of the STATCOM into two units called the bulk inverter and the conditioning inverter. The high-power bulk inverter is operated at low frequency whereas the low-power conditioning inverter is operated at high frequency to suppress harmonics produced by the bulk inverter. Fluctuations at the point of common coupling voltage, caused by sudden wind changes, are suppressed by controlling reactive power of the STATCOM. Simulation and experimental results are presented to verify the efficacy of the proposed modulation and control techniques used in the STATCOM.

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10 citations in Web of Science®

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ID Code: 72492
Item Type: Journal Article
Refereed: Yes
Keywords: STATCOM, Harmonics suppression, Power generation control, Reactive power control, Static VAr compensators, Wind power plants, Invertors
DOI: 10.1049/iet-pel.2010.0095
ISSN: 1755-4535
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2011 The Institution of Engineering and Technology
Deposited On: 03 Jun 2014 23:04
Last Modified: 14 Aug 2014 23:37

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