Results 1 to 10 of about 321 (151)

A multiplexing controllable line-commutated converter without commutation failures

open access: yesInternational Journal of Electrical Power & Energy Systems
Conventional Line-Commutated Converter-based High Voltage Direct Current (LCC-HVDC) systems are widely used in long-distance, high-capacity power transmission, but they are prone to commutation failures due to the uncontrollable turn-off characteristics ...
Kang Liu   +5 more
doaj   +2 more sources

Dynamic Phasor Modelling of LCC-HVDC System Based on a Practical Project [PDF]

open access: yesE3S Web of Conferences, 2021
This paper presents a detailed dynamic phasor modeling process of a line-commutated converter-based HVDC (LCC-HVDC) system. Firstly, the dynamic phasor models of the single-ended LCC rectifier station, inverter station and the DC line are established ...
Li Huan, Qin Kang
doaj   +1 more source

A Multi-Functional De-Icing Equipment Using Hybrid Type Parallel Current Source Converters [PDF]

open access: yesE3S Web of Conferences, 2021
This paper has proposed a phase controlled and PWM controlled power current source converter (CSC) for transmission line de-icing. The proposed system consists of a high-power thyristor-based line commutated converter to contribute a majority of the dc ...
Hu Yang   +7 more
doaj   +1 more source

S-Transform Based Traveling Wave Directional Pilot Protection for Hybrid LCC-MMC-HVDC Transmission Line

open access: yesEnergies, 2022
In this paper, the traveling wave protection issue of a hybrid high-voltage direct-current transmission line based on the line-commutated converter and modular multilevel converter is investigated.
Wei Zhang, Dong Wang
doaj   +1 more source

Calculation of Main Circuit Steady-State Parameters for Capacitor Commutated Converter System

open access: yesApplied Sciences, 2023
The calculation of the main circuit parameters is the basic part of the engineering design for high voltage direct current (HVDC) transmission systems.
Ming Yan, Zheren Zhang, Zheng Xu
doaj   +1 more source

Improved Coordinated Control Approach for Evolved CCC-HVDC System to Enhance Mitigation Effect of Commutation Failure

open access: yesJournal of Modern Power Systems and Clean Energy, 2021
The evolved capacitor commutated converter (ECCC), embedded with anti-parallel thyristors based dual-di-rectional full-bridge modules (APT-DFBMs), can effectively reduce commutation failure (CF) risks of line-commutated con-verter-based high voltage ...
Chunyi Guo, Bo Liu, Chengyong Zhao
doaj   +1 more source

A Single-Phase Bidirectional AC/DC Converter for V2G Applications

open access: yesEnergies, 2017
This paper presents a single-phase bidirectional current-source AC/DC converter for vehicle to grid (V2G) applications. The presented converter consists of a line frequency commutated unfolding bridge and an interleaved buck-boost stage.
Tao Peng   +8 more
doaj   +1 more source

Adaptive fault recovery strategy of LCC‐MMC based hybrid HVDC

open access: yesIET Generation, Transmission & Distribution, 2021
Hybrid HVDC consisting of line commutated converter (LCC) on rectifier side and modular multilevel converter (MMC) on inverter side is the favourable future trend of HVDC projects utilising the advantages of both converter technologies.
Kazmi Sayed Tassawar Hussain   +4 more
doaj   +1 more source

Capacitive Filter Based HVDC Converter for Reducing the Vibration and Noise of Converter Transformer

open access: yesIEEE 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

open access: yesEngineering, 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

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