**5. Simulations**

This section presents detailed MATLAB-based simulations that assess the MMC performance during SM faults for two different implementations of internal dynamic controllers described earlier, i.e., control schemes A and B, considering two distinct operating points. The simulated MMC models include the following external controllers: active and reactive powers; positive and negative sequence currents. Two control methods for internal dynamics considered in this section are:


Sorting-based SM level voltage balancing method is adopted, and modulators based on level-shifted pulse width modulation and phase disposition carriers are used to generate the gating signals for the SMs.
