Results 11 to 20 of about 5,225 (215)
Engineering ReportsTo address the challenges associated with the high cost and large footprint of high‐voltage direct current (HVDC) stations, this paper proposes a lightweight converter topology based on a hybrid configuration of a line‐commutated converter (LCC) and a ...
Yang Wang +7 more
doaj +2 more sources
Capacitive Filter Based HVDC Converter for Reducing the Vibration and Noise of Converter Transformer
IEEE Access, 2022 Harmonic currents generated by converters in the HVDC system flow into the converter transformer. The harmonic current and voltage in the converter transformer will cause electromagnetic vibration of windings and iron core, which result in serious noise ...
Liang Zhao +4 more
doaj +1 more source
Research on DC Protection Strategy in Multi-Terminal Hybrid HVDC System
Engineering, 2021 Multi-terminal hybrid high-voltage direct current (HVDC) systems have been developed quickly in recent years in power transmission area. However, for voltage-source converter (VSC) stations in hybrid HVDC systems, no direct current (DC) filters are ...
Yuping Zheng +5 more
doaj +1 more source
DC–DC converter concept allowing line commutated converters and voltage source converters based HVDC systems connectivity [PDF]
IET Power Electronics, 2020 The most common two challenges in high‐voltage direct current (HVDC) multi‐terminal transmission are the DC fault isolation and the DC voltage stepping up/down. Additionally, interconnecting voltage source converter (VSC)‐ and line commutated converter (LCC)‐based HVDC network topologies has been challenging. This study introduces a new DC–DC converter
Mohamed A. Elgenedy +3 more
openaire +3 more sources
A describing function for resonantly commutated H-bridge inverters [PDF]
, 2004 —The paper presents the derivation of a describing function to model the dynamic behavior of a metal oxide semiconductor field effect transistor-based, capacitively commutated H-bridge, including a comprehensive explanation of the various stages in the ...
Bingham, Chris, Sewell, H I, Stone, D A
core +1 more source
Operation analysis of thyristor based front-to-front active-forced-commutated bridge DC transformer in LCC and VSC hybrid HVDC networks [PDF]
, 2017 The active-forced-commutated (AFC) bridge employs a symmetrical thyristor-bridge with auxiliary self-commutated full-bridge chain-link (FB-CL) circuit to assist its soft transition and forced commutation.
Adam, Grain P. +3 more
core +2 more sources
The Journal of Engineering, 2019 A hybrid high-voltage direct current (HVDC) system comprises a line commutated converter (LCC) at the rectifier side and a voltage source converter (VSC) at the inverter side, combining advantages of both LCC and VSC systems.
Yanting Wang +3 more
doaj +1 more source
Fault response comparison of LCC–MMC hybrid topologies and conventional HVDC topology
The 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
A Power Allocation Strategy for DC Line Fault in Serial Hybrid LCC-MMC HVDC System
IEEE Access, 2022 The serial hybrid line commutated converter-modular multilevel converter (LCC-MMC) high voltage direct current (HVDC) system has structural features that cause the inverter side three MMCs to form a closed-loop after a DC line fault.
Xiaopeng Li +3 more
doaj +1 more source
Energies, 2021 This paper proposes a generic analysis framework for a grid supporting modular multilevel converter (MMC)-high voltage DC (HVDC) in a multi-infeed of line commutated converter (LCC) and MMC (MILM) system. MMC-HVDC can support the grid by compensating for
Sehyun Kim +4 more
doaj +1 more source