Results 21 to 30 of about 708,045 (210)

A hybrid multilevel converter for medium and high voltage applications [PDF]

open access: yes, 2010
This paper investigates the suitability of the hybrid multilevel converter for medium and high voltage application. The converter operation, modulation, and capacitor voltage balancing method are described in detail.
Ahmed, Khaled   +4 more
core   +3 more sources

Phase Sequence Exchange Technology Based on MMC for Improving the Power Angle Stability of Power Systems

open access: yesEnergies, 2022
Power angle stability of power systems is one of the main factors which restricts the power transmission capacity. In order to prevent the power angle instability of power systems, phase sequence exchange (PSE) is a recently developed emergency control ...
Peng Dong   +6 more
doaj   +1 more source

Design of internal dynamics based MMC controller for HVDC transmission

open access: yesEnergy Conversion and Economics, 2020
Currently, the modular multilevel converter (MMC) is the most advanced voltage source converter topology. Because the MMC is a converter topology, the most common approach for controller design is considering the conventional converter model to design ...
Ankit Yadav   +2 more
doaj   +1 more source

A hybrid arm‐multiplexing MMC for DC fault ride‐through without blocking

open access: yesIET Renewable Power Generation, 2023
Considering both the DC fault ride‐through (FRT) and lightweight requirements of modular multilevel converter (MMC), this paper proposes a hybrid arm‐multiplexing modular multilevel converter (HAM‐MMC).
Yi Wang, Yuwei Li, Chen Wang, Jianye Tao
doaj   +1 more source

An Improved Phase-Disposition Pulse Width Modulation Method for Hybrid Modular Multilevel Converter

open access: yesEnergies, 2023
The hybrid modular multilevel converter (MMC) consisting of half-bridge submodules (HBSMs) and full-bridge submodules (FBSMs) is a promising solution for overhead lines high-voltage direct current systems (HVDC) due to the advantages of direct current ...
Fayun Zhou   +5 more
doaj   +1 more source

Joint Limiting Control Strategy Based on Virtual Impedance Shaping for Suppressing DC Fault Current and Arm Current in MMC-HVDC Systems

open access: yesJournal of Modern Power Systems and Clean Energy, 2023
This paper proposes a joint limiting control strategy for suppressing DC fault current and arm current in modular multilevel converter-based high-voltage direct current (MMC-HVDC) systems, which includes two target-oriented current limiting controls.
Qin Jiang   +6 more
doaj   +1 more source

The Alternate Arm Converter: A New Hybrid Multilevel Converter With DC-Fault Blocking Capability [PDF]

open access: yes, 2013
This paper explains the working principles, supported by simulation results, of a new converter topology intended for HVDC applications, called the alternate arm converter (AAC).
Merlin, Michael MC   +6 more
core   +1 more source

Unidirectional DC/DC modular multilevel converter for offshore windfarm with the control strategy based on stationary frame

open access: yesThe Journal of Engineering, 2019
This paper presents the design and control of an advanced unidirectional DC/DC modular multilevel converter (MMC) that facilitate the integration of off-shore windfarms with the high-voltage direct current (HVDC) transmission system.
He Liu   +4 more
doaj   +1 more source

Short-Circuit Fault Current Calculation Method for the Multi-Terminal DC Grid Considering the DC Circuit Breaker

open access: yesEnergies, 2020
The analysis and calculation of the short-circuit fault current in the DC grid is of great significance to the design and configuration of the converter station and DC circuit breaker parameters.
Haipeng Jia   +5 more
doaj   +1 more source

Selected aspects of Modular Multilevel Converter operation [PDF]

open access: yes, 2014
The operation of the Modular Multilevel Converter (MMC) is the main subject of this paper. Selected operation aspects are discussed on the basis of the averaged model, with a special focus on power section parameters and control.
Nalepa, R.   +7 more
core   +2 more sources

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