Modeling and circulating current control of MMC

Author

Herrera, Luis ; Yao, Xiu ; Wang, Jin

Author_Institution

Dept. of Electr. & Comput. Eng., Ohio State Univ., Columbus, OH, USA

fYear

2015

fDate

15-19 March 2015

Firstpage

2898

Lastpage

2902

Abstract

Modular Multilevel Converters (MMC) offer several advantages over common three level inverters. For example, MMCs have lower switching frequency and lower dv=dt due to their multilevel output. For this reason, MMCs are typically used in High Voltage DC (HVDC) applications. In this paper, different approaches for (real time) simulation of MMC based systems are presented. A Thevenin based approach with a constant admittance matrix is proposed to lower the complexity and computation time. In addition, a circulating current suppression controller is formulated based on time domain analysis and validated through simulations.

Keywords

HVDC power convertors; electric current control; matrix algebra; time-domain analysis; HVDC application; MMC; Thevenin based approach; circulating current suppression controller; constant admittance matrix; high voltage DC application; inverter; modular multilevel converter; time domain analysis; Capacitors; Computational modeling; Converters; Current control; HVDC transmission; Mathematical model; Real-time systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition (APEC), 2015 IEEE

Conference_Location

Charlotte, NC

Type

conf

DOI

10.1109/APEC.2015.7104762

Filename

7104762