Hybrid modular multilevel converters for high-AC/low-DC medium-voltage applications

JK Motwani, J Liu, R Burgos, Z Zhou… - IEEE Open Journal of …, 2023 - ieeexplore.ieee.org
With ever-increasing power-density requirements, technologies such as energy storage
systems and electric-vehicles can benefit greatly from interfacing medium-voltage (MV)-AC …

Modeling and control of a hybrid modular multilevel converter for high-AC/low-DC medium-voltage applications

JK Motwani, J Liu, D Boroyevich… - … on Power Electronics, 2024 - ieeexplore.ieee.org
Hybrid modular multilevel converters (HMMC) have emerged recently as an improvement
over conventional MMCs due to their lower submodule capacitor sizing, smaller …

Optimum injection of second harmonic circulating currents for balancing capacitor voltages in hybrid MMC during reduced DC voltage conditions

T Bandaru, D Samajdar, PBS Varma… - IEEE Transactions …, 2020 - ieeexplore.ieee.org
Hybrid modular multilevel converter (Hyb-MMC), which consists of both half-bridge (HB) and
full-bridge (FB) submodules (SMs), has the capability to withstand wide variations in dc-link …

An integrated control and protection scheme based on FBSM-MMC active current limiting strategy for DC distribution network

T Zheng, W Lv, Q Wu, R Li, X Liu… - IEEE Journal of …, 2020 - ieeexplore.ieee.org
DC faults can easily lead to overcurrent in dc distribution networks; these faults pose serious
threats to the safe operation of the system. The blocking of a modular multilevel converter …

Improved aavm and small-signal model of hybrid mmc considering dynamic differences between full-bridge and half-bridge sub-modules

M Guo, Q Hao, L Ding - IEEE Transactions on Power …, 2024 - ieeexplore.ieee.org
The hybrid modular multilevel converter (MMC), which consists of half-bridge submodules
(HBSMs) and full-bridge submodules (FBSMs), is the general form of MMC. The …

Capacitor voltage imbalance mechanism and balancing control of MMC when riding through PTG fault

Z He, M Lu, L Hang, P Zeng… - CSEE Journal of Power …, 2022 - ieeexplore.ieee.org
Modular multilevel converter (MMC) based fault ride through (FRT) control is a promising
solution to deal with the pole-to-ground (PTG) fault in high voltage direct current (HVDC) …

MMC-MTDC transmission system with partially hybrid branches

Y Chen, S Pan, M Huang, Z Zhu… - CES Transactions on …, 2021 - ieeexplore.ieee.org
This paper proposes a hybrid submodule modular multilevel converter (MMC) topology
which is suitable for multi terminal direct current (MTDC) transmission systems. Each arm of …

Analysis of capacitor voltage unbalance in hybrid MMC and its novel operation with reduced submodule capacitance

NP Rao, A Shukla - IEEE Journal of Emerging and Selected …, 2022 - ieeexplore.ieee.org
The hybrid modular multilevel converter (MMC) consists of both half-bridge submodules
(HBSMs) and full-bridge submodules (FBSMs) in the same arm. The negative insertion of …

Design analysis and capacitance reduction of hybrid modular multilevel converters under boost ac mode

Y Zhang, Y Zhang, J Zhang, F Deng… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
This article offers an in-depth analysis of the hybrid modular multilevel converter (MMC)
working steadily under boost ac mode and proposes an improved capacitance design …

Improved CPS-PWM approach for over-modulation operations of hybrid modular multilevel converter

Y Zhang, J Zhang, F Deng - IEEE Journal of Emerging and …, 2022 - ieeexplore.ieee.org
The over-modulation capability of the hybrid modular multilevel converter (MMC), mixed by
half-bridge and full-bridge submodules (SMs), has acquired widespread attention recently …