A Novel Capacitor-Voltage Balancing Strategy for Double-Y STATCOM Under Unbalanced Operations
Artikel i vetenskaplig tidskrift, 2021

This paper proposes a novel capacitor-voltage balancing strategy for the double-Y MMC STATCOM operated under unbalanced current conditions of the system. 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 experimental results.

Current distribution

Topology

Legged locomotion

HVDC transmission

STATCOM

Automatic voltage control

Capacitors

double star converter

unbalanced conditions

Power distribution

modular multilevel converters

converter rating

capacitor-voltage balancing

Författare

Ehsan Behrouzian

Chalmers, Elektroteknik, Elkraftteknik, Elnät och komponenter

Massimo Bongiorno

Chalmers, Elektroteknik, Elkraftteknik, Elnät och komponenter

Jan Svensson

Hitachi ABB Power Grids

Aravind Mohanaveeramani

Hitachi ABB Power Grids

IEEE Transactions on Industry Applications

0093-9994 (ISSN)

Vol. In Press

Ämneskategorier

Övrig annan teknik

Energisystem

Annan elektroteknik och elektronik

DOI

10.1109/TIA.2021.3066093

Mer information

Senast uppdaterat

2021-04-28