Title :
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
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;
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2015 IEEE
Conference_Location :
Charlotte, NC
DOI :
10.1109/APEC.2015.7104762
