A Proposed Capacitor Voltage-Balancing Strategy for Double-Y STATCOM Operated Under Unbalanced Conditions
Paper i proceeding, 2019

This paper proposes a novel capacitor voltage-balancing strategy for the double-Y MMC STATCOM operated under unbalanced conditions. The proposed method, based on zero-sequence voltage injection, manipulates the current distribution between the converter arms to minimize the converter ratings. The proposed balancing strategy is compared with the classical approach based on controlling the circulating dc currents. For the same unbalanced conditions, the proposed strategy leads to lower energy rating for the converter as compared with the classical one, while the semiconductor ratings remain the same in both strategies. Theoretical findings are verified through simulation results.

double star converter

modular multilevel converters

unbalanced conditions

capacitor voltage balancing

converter rating

STATCOM

Författare

Ehsan Behrouzian

Chalmers, Elektroteknik, Elkraftteknik, Elnät och komponenter

Massimo Bongiorno

Chalmers, Elektroteknik, Elkraftteknik, Elnät och komponenter

Jan R Svensson

Chalmers, Elektroteknik, Elkraftteknik, Elnät och komponenter

Aravind Mohanaveeramani

ABB Corporate Research Center

ECCE

2329-3721 (ISSN) 2329-3748 (eISSN)

IEEE Energy Conversion Congress and Exposition (ECCE)
Baltimore, MD, USA,

Styrkeområden

Energi

Ämneskategorier

Annan elektroteknik och elektronik

DOI

10.1109/ECCE.2019.8912269

Mer information

Skapat

2019-11-29