The decoupled control of the ac-side, dc-link and circulating current of a modular multilevel
converter (MMC) can significantly improve its operation and control performances. This …

This paper proposes an enhanced control method for a high-voltage direct-current (HVDC)
modular multilevel converter (MMC). To control an MMC-HVDC system properly, the ac …

Direct modulation principle is widely used in modular multilevel converters (MMCs) for its
simplicity and natural stability. However, it results in strong active and reactive power …

This paper introduces a modular multilevel converter (MMC) based prototype for
investigating the control of large-scale MMCs. The prototype contains 264 submodules …

The existing power decoupling control method of modular multilevel converter (MMC) was
developed from that of conventional two-level voltage source converters. Therefore, it cannot …

The existing control strategies of modular multilevel converter (MMC) balance the capacitor
voltage on the premise that the active power of ac side is balanced with that of dc bus. Thus …

The modular multilevel converter (MMC) is a new kind of voltage source converter (VSC)
with a high number of voltage levels and considered to be suitable for HVDC transmission …

Modular multilevel converters (MMCs) are multi-input multi-output (MIMO) nonlinear
systems. The control systems for MMCs are required to simultaneously achieve multiple …

This paper presents a detailed analysis and improved control strategy for modular multilevel
converters (MMC) under asymmetric arm inductance conditions. Unlike symmetric …

Considering the synthetical effects of the ac system and the dc system, this paper proposes
two novel indexes, the dynamic redundancy and the utilization ratio of the submodules. On …