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The average value model of the Modular Multilevel Converter (MMC) is in general non-linear with time periodic variables. Recent developments demonstrated how the MMC model can be transformed into a a Steady-State Time Invariant (SSTI) representation allowing for linearization of the model. While previous modeling efforts for small-signal eigenvalue analysis considered mainly the classical Circulating...
Modular multilevel converters (MMC) for high voltage direct current (HVDC) application employ hundreds of sub-modules. Explicit modeling of sub-modules implies hundreds of nodes and semiconductor devices in the equivalent models for the system; this in turn poses a computational challenge for electromagnetic transient (EMT) simulation. Fast and accurate simulation models for MMC based on sub-module/arm's...
Small-signal stability studies of power systems including Voltage Source Converter (VSC) HVDC transmission schemes are commonly based on state-space models representing two-level converters and their related control loops. However, an increasing share of HVDC links are based on Modular Multilevel Converters (MMCs), which present additional dynamics and control loops associated with their internal...
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