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A voltage-balanced hybrid MMC topology for DC fault ride-through
2019 IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia), 2019This paper proposes a voltage-balanced HBSMCDSM hybrid MMC topology. This topology adds diodes between sub-modules based on the traditional HBSM-CDSM hybrid topology. The diode's single-conductivity provides a new loop for fault current removal and changes the characteristics of bypassing HBSM during faults. The new topology can quickly clear the fault
Mao Ji, Yi Wang, Kaidong Tan, Chen Wang
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Design of DC Reactors for DC Fault Ride-through on MMC-based Bipolar DC Grid
2019 4th IEEE Workshop on the Electronic Grid (eGRID), 2019This paper provides the design criteria of the DC reactors for the most promising configuration option that is bipolar DC grid. The DC reactors on bipolar grid are divided into pole reactor and neural line reactor. The configurations of DC reactor are compared and shows the distributed configuration is suitable for neutral line reactor and pole reactor.
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Optimal control and DC fault ride-through of transmission level, MMC-based, isolated DC/DC converter
2016 IEEE Power and Energy Society General Meeting (PESGM), 2016This paper investigates an optimum control strategy for an isolated dual-active-bridge DC/DC converter based on MMC (Modular Multilevel Converter) technology. The control goal is to achieve minimal current magnitude for given power transfer and to provide fast control for full positive and negative power range.
Dragan Jovcic, null Huibin Zhang
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A novel topology intergrating DC Fault isolation and AC/DC fault ride-through
IET Conference Proceedings, 2023S. Ding +4 more
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DC Fault Ride-Through of a Three-Phase Dual-Active Bridge Converter for DC Grids
2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia), 2018DC fault ride-through capability is a highly desired feature of three-phase dual-active bridge (DAB3) converters in a dc distribution grid. However, the state-of-the-art modulations schemes for DAB3 converters such as single phase-shift and asymmetrical duty-cycle control have a limited dc fault ride-through capability due to either the resulting high ...
Jingxin Hu +2 more
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Grounding architectures for enabling ground fault ride-through capability in DC microgrids
2017 IEEE Second International Conference on DC Microgrids (ICDCM), 2017Distributed generation in the power grid will result in considerable efficiency improvement and increase in reliability and stability of the grid. And DC microgrids have clear benefits such as higher reliability, higher efficiency, better compatibility with DC loads, expandability and etc., over their AC equivalent systems.
Maziar Mobarrez +3 more
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A New Hybrid Submodule for MMC with DC Fault Ride-Through Capability
2018 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), 2018Modular multilevel converter (MMC) has become the most prominent topology for high voltage direct current (HVDC) applications due to its modularity, lower losses, less filtering requirements and flexible controllability. However, MMC still lacks in terms of efficiency and fault tolerant capability compared to the line commutated converters (LCC) based ...
Yedida Ayyappa Rudrasimha +2 more
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Fault Current Limitation Based Photovoltaic DC Distribution System Fault Ride Through Control
IEEE Transactions on Power Delivery, 2023Juntao Li +5 more
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On Hybrid Modular Multilevel Converters with Active DC Fault Ride-Through Capability
12th IET International Conference on AC and DC Power Transmission (ACDC 2016), 2016This paper presents a comprehensive analysis and comparison of hybrid MMC topologies with DC fault ride-through capability (DC-FRT), consisting of half-bridge sub-modules (HBSMs) and full-bridge sub-modules (FBSMs). Overmodulation index, semiconductor count and capacitor's capacitance with a specified rated DC voltage are mainly considered. Constraints
Maozeng Lu Maozeng Lu +4 more
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A Compact Hybrid MMC with DC Fault Ride-Through Capability
IECON 2023- 49th Annual Conference of the IEEE Industrial Electronics Society, 2023Yuwei Li +5 more
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