Results 61 to 70 of about 2,361 (200)
Full-bridge modular multilevel converter (FB-MMC) with extended control range [PDF]
This paper presents an attractive control scheme that decouples cell capacitor voltage regulation of the FB-MMC from the dc link voltage regulation. This is achieved by manipulating both ac and dc components of modulation functions.
Adam, Grain Philip +4 more
core +1 more source
Multi‐Layer MTDC Protection: Design and Simulation Assessment
This study proposes a novel multi‐layer protection architecture for multi‐terminal DC systems that separates fault current‐limiting and interruption functions. By combining a thyristor‐based fault current limiter with an active resonance circuit breaker, the scheme significantly reduces peak fault currents and di/dt stress, enabling a more compact ...
Jong‐Geon Lee +3 more
wiley +1 more source
Thyristor based modular multilevel converter with active full-bridge chain-link for forced commutation [PDF]
Voltage source converter (VSC) such as modular multilevel converter (MMC) has been intensively studied for high voltage direct current (HVDC) applications due to its flexible terminal voltage adjustment, compatibility with weak ac grid and independent ...
Finney, Stephen +2 more
core +1 more source
Stability and Synchronization of MMC‐HVDC Systems Using SRF and Inertia‐Based PLLs
This study investigates the influence of synchronous reference frame PLL (SRF‐PLL) and the inertia PLL (IPLL) on the stability of grid‐connected modular multilevel converter high voltage direct current (MMC‐HVDC) systems. The findings highlight intrinsic stability limitations of PLL‐based systems, offering insights toward more stable, PLL‐less ...
Shuai Wang, Robin Preece, Mike Barnes
wiley +1 more source
Startup Control for MMC-HVDC System
In order to restrain overvoltage and over current which are produced during the startup process of MMC-HVDC, it is necessary to design startup control for MMC-HVDC system.
WANG Weian +3 more
doaj
Simulation of Wind Power Integration with Modular Multilevel Converter-Based High Voltage Direct Current [PDF]
The growing demand for large-capacity long distance transmission of wind power has boosted the development of flexible direct current (DC) transmission technology.
Li, Hua +3 more
core +2 more sources
Research on Fault Ride‐Through Characteristics of Inverter‐Side Hybrid HVDC in Offshore Wind Farms
This paper addresses issues in wind power DC transmission systems, such as difficulty in maintaining power delivery during rectifier‐side faults and frequent overvoltage occurrences during inverter‐side faults. A hybrid topology comprising a rectifier‐side MMC and an inverter‐side LCC‐MMC configuration is proposed, along with corresponding enhanced ...
Guoqing Yang, Jiaying He, Jiaying Xu
wiley +1 more source
A Novel MMC‐HVDC Transmission Line Protection Method Based on Energy Criterion and GADF‐MA‐CNN
1. Identifies faulty sections using the energy criterion. 2. Uses GADF to acquire fault voltage characteristics. Utilises the MA‐CNN model for rapid fault type identification. 3. It has high accuracy, strong anti‐noise ability and can withstand 500? fault resistance.
Xiangyang Liu +3 more
wiley +1 more source
Modular multi-level converter (MMC) with press-packing IGBT devices is the popular and key equipment of VSC-HVDC system, its reliability is directly related to the equipment safe operation.
Li Hui +6 more
doaj +1 more source
Some of the topologies with a fewer number of power switches are reviewed and scrutinized. An extensive analysis of the topologies, control strategy and applications are presented here, suggesting suitable multilevel inverter solutions to the known industrial application or new research.
Anurag Choudhary +5 more
wiley +1 more source

