Linear Active Disturbance Rejection Control and Stability Analysis for Modular Multilevel Converters Under Weak Grid
The modular multilevel converters (MMCs) are popularly used in high-voltage direct current (HVDC) transmission systems.However, for the direct modulation based MMC, its complex internal dynamics and the interaction with the grid impedance would induce the frequency coupling effect, which may lead to instability issues, especially in the case of wea