A Proposed Capacitor Voltage-Balancing Strategy for Double-Y STATCOM Operated Under Unbalanced Conditions
Paper in proceedings, 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.

capacitor voltage balancing

double star converter

STATCOM

unbalanced conditions

modular multilevel converters

converter rating

Author

Ehsan Behrouzian

Chalmers, Electrical Engineering, Electric Power Engineering, Power grids and Components

Massimo Bongiorno

Chalmers, Electrical Engineering, Electric Power Engineering, Power grids and Components

Jan R Svensson

ABB Corporate Research Center

Aravind Mohanaveeramani

ABB Corporate Research Center

2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019

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

11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019
Baltimore, MD, USA,

Areas of Advance

Energy

Subject Categories

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/ECCE.2019.8912269

More information

Latest update

7/30/2020