Results 81 to 90 of about 4,922,386 (131)

Design and validation of a novel semiconductor area optimised 3300 V SiC half bridge for MMC

open access: yesIET Power Electronics
This article presents the design and experimental validation of a novel semiconductor area optimised 3300 V half bridge with Silicon Carbide (SiC) MOSFETs for HVDC converters. Based on a loss simulation, the problem statement is provided. On this results,
Lukas Bergmann, Mark‐M. Bakran
doaj   +1 more source

Fault response comparison of LCC–MMC hybrid topologies and conventional HVDC topology

open access: yesThe Journal of Engineering, 2018
The modular multilevel converter (MMC) can be used to upgrade conventional line commutated converter-based HVDC systems (LCC-HVDC), construct the hybrid topologies of LCC and MMC to acquire better fault responses.
Boliang Lou   +4 more
doaj   +1 more source

Loss reduction analysis and control of AC-voltage-boosted FBSM MMC by injecting second harmonic circulating current

open access: yesThe Journal of Engineering, 2019
Reducing the power loss and handling short-circuit faults in HVDC systems are crucial for economical and reliable operation of modular multilevel converters (MMC). This paper proposes a loss reduction method for AC voltage-boosted FBSM-MMC by controlling
Muchao Xiang, Jiabing Hu, Zhiyuan He
doaj   +1 more source

HVDC tie links in smart power grids: A versatile control strategy of VSC converters

open access: yes, 2021
The forced switching converters are the kernel of the modern paradigm of VSC-HVDC system. It is widely recognized that appropriate control laws make these converters more advantageous than the traditional line commutated ones.
Mottola F.   +5 more
core   +1 more source

Calculation method for equivalent model of AC filters in HVDC transmission system

open access: yesThe Journal of Engineering, 2019
AC filter is an important part of HVDC system, which can restrain the AC-side harmonics effectively and compensate for the reactive power consumed by converter station.
Lv Wentao   +4 more
doaj   +1 more source

Active and reactive power control of a VSC-HVdc

open access: yes, 2008
Voltage source converter-based HVdc(VSC-HVdc) systems have the ability to rapidly control the transmitted active power, and also to independently exchange reactive power with transmissions systems.
Ghandhari, Mehrdad,   +2 more
core   +1 more source

Comparison of DC linear and non-linear models for multi-terminal VSC HVDC networks

open access: yesThe Journal of Engineering, 2019
The analysis and control design of multi-terminal VSC-HVDC systems requires a linearised model of these inherently non-linear systems. This paper develops such a model, from converter to multi-terminal system, discusses the key concepts and shows its use
Jesus Carmona-Sanchez   +3 more
doaj   +1 more source

Small signal analysis of DC voltage control based on a virtual resistance of DC/DC converter integrated in a multiterminal DC grid

open access: yesIET Generation, Transmission & Distribution
The future multi‐terminal direct‐current (MTDC) grid will require the interconnection of point‐to‐point high‐voltage (HV) DC links with different specifications such as DC voltage level, system grounding configuration and HVDC technology.
Ghazala Shafique   +5 more
doaj   +1 more source

Feasibility of applying inductive filtering technology to the HVDC transmission system

open access: yesThe Journal of Engineering, 2018
This study explores the feasibility of applying inductive filtering technology to high-voltage direct-current (HVDC) transmission system since only filtering in the net side may lead to a lot of harmonics in the converter transformer. Basic principles of
Shang Rong-Yan   +2 more
doaj   +1 more source

Future‐proofing city power grids: FID‐based efficient interconnection strategies for major load‐centred environments

open access: yesIET Renewable Power Generation
The flexible interconnection device (FID) offers significant advantages for interconnecting different distribution networks flexibly. This paper focuses on the significant advantages offered by the FID for interconnecting different distribution networks ...
Peiqian Guo   +5 more
doaj   +1 more source

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