A Computationally Efficient Continuous Model for the Modular Multilevel Converter

• Published in: IEEE journal of emerging and selected topics in power electronics Vol. 2; no. 4; pp. 1139 - 1148
• Main Authors: Ahmed, Noman, Angquist, Lennart, Norrga, Staffan, Antonopoulos, Antonios, Harnefors, Lennart, Nee, Hans-Peter
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 01-12-2014; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Blocking; Capacitors; Circuit faults; Computational modeling; continuous model; Converters; electromagnetic transient (EMT) programs; high-voltage dc (HVDC) transmission; HVDC transmission; Integrated circuit modeling; modular multilevel converter (MMC); SRA - Energi; SRA - Energy; Voltage control; voltage-source converter (VSC); Blocking; high-voltage dc (HVDC) transmission; continuous model; modular multilevel converter (MMC); electromagnetic transient (EMT) programs; voltage-source converter (VSC)
• ISSN: 2168-6777; 2168-6785
• DOI: 10.1109/JESTPE.2014.2332041

Simulation models of the modular multilevel converter (MMC) play a very important role for studying the dynamic performance. Detailed modeling of the MMC in electromagnetic transient simulation programs is cumbersome, as it requires high computational effort and simulation time. Several averaged or continuous models proposed in the literature lack the capability to describe the blocked state. This paper presents a continuous model, which is capable of accurately simulating the blocked state. This feature is very important for accurate simulation of faults. The model is generally applicable, although it is particularly useful in high-voltage dc applications.