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Circulating Current Suppression Strategies for D-STATCOM Based on Modular Multilevel Converters

H. A. Pereira ; M. R. Haddioui ; L. O. M. de Oliveira ; L. Mathe ; Massimo Bongiorno (Institutionen för energi och miljö, Elteknik) ; R. Teodorescu
2015 Ieee 13th Brazilian Power Electronics Conference and 1st Southern Power Electronics Conference (Cobep/Spec) p. 1-6. (2015)
[Konferensbidrag, refereegranskat]

This work focuses on the circulating current control of a STAtic synchronous COMpensator (STATCOM) based on Modular Multilevel Converter (MMC). Two circulating current estimation strategies are analyzed, with focus on the converter performance improvement. The conventional method to estimated the circulating current has been improved using a Second Order Generalized Integrator (SOGI) structure. The proposed strategy eliminates the third harmonie component from the circulating current through a SOGI filter. Simulated and experimental results compare both classical and proposed strategy in terms of reduction in the circulating current, dynamic behavior during reference changes and reduction in the STATCOM losses.

Nyckelord: Circulating current, STAtic synchronous COMpensator (STATCOM), Modular Multilevel Converters (MMCs), Voltage-Source Converters (VSCs), cascade converter, pwm statcom, performance, design, Energy & Fuels, Engineering



Denna post skapades 2016-09-22.
CPL Pubid: 242178

 

Institutioner (Chalmers)

Institutionen för energi och miljö, Elteknik

Ämnesområden

Energiteknik

Chalmers infrastruktur