Results 71 to 80 of about 308 (120)
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Line Commutated Converter Based on Integrated Gate Commutated Thyristor
2023 IEEE 7th Conference on Energy Internet and Energy System Integration (EI2), 2023Xiaolin Shen
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Analysis of commutator configurations for the protection of a line commutated converter
Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting, 1992Methods of protecting a line-commutated converter and load in the event of line-induced converter faults are investigated. The process of protection is found to be composed of a two part process: (1) detecting a fault and (2) implementing corrective action during the postfault period.
F.P. Dawson, S.B. Dewan
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Novel Controllable-Line-Commutated Converter for Eliminating Commutation Failures of LCC-HVDC System
IEEE Transactions on Power Delivery, 2023Tingting Li, Jun Yang, Chong Gao
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An Enhanced Strategy to Inhibit Commutation Failure in Line-Commutated Converters
IEEE Transactions on Industrial Electronics, 2020Failure of the commutation process is a serious malfunction in line-commutated high-voltage direct current (HVdc) converters, which mainly occurs due to inverter ac faults and may lead to outage of the HVdc system. In this paper, an improved strategy is developed that functions based on the SIEMENS HVdc control system under normal conditions and ...
Sohrab Mirsaeidi, Xinzhou Dong
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An Accurate Impedance Model of Line Commutated Converter With Variable Commutation Overlap
IEEE Transactions on Power Delivery, 2022This paper proposes an accurate impedance model of line commutated converter (LCC) in the stationary frame. The commutation overlap process caused by the transformer leakage inductance complicates the modeling for LCC. Traditional impedance models are derived in positive sequence and negative sequence frame based on the simplified commutation overlap ...
Xiang Chen +5 more
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Line inductance measurement by using commutation time in line commutated converters
Electrical Engineering, 2009Finding line inductance using wiring diagrams of the network is usually difficult or even impossible. In general, line inductance has to be measured in a simple nondisruptive way without service interruption. Several line inductance measurement techniques have been suggested previously, but they suffer from a number of limitations.
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Design of commutator configurations for the protection of a line commutated converter
Conference Record of the IEEE Industry Applications Society Annual Meeting, 2003The author establishes design procedures and design illustrations for the following three practical commutator configurations: series commutator; half-bridge shunt commutator; and coupled full-bridge shunt. The first two commutators are designed for small load inductances.
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IEEE Transactions on Industrial Electronics, 2004
Recently, static var generators (SVGs) or static synchronous compensators based on self-commutated converters have been put into practical use for the purpose of compensation for reactive power, power swings damping, and/or voltage control in power systems.
Shinzo Tamai +3 more
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Recently, static var generators (SVGs) or static synchronous compensators based on self-commutated converters have been put into practical use for the purpose of compensation for reactive power, power swings damping, and/or voltage control in power systems.
Shinzo Tamai +3 more
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A Backup Protection Algorithm for Bipolar Line-Commutated Converter HVDC Lines
IEEE Systems Journal, 2021This article proposes a new backup protection algorithm for bipolar high voltage alternative current (HVdc) lines using two-end synchronized sampled currents. Unlike traditional differential protection, the proposed algorithm can be applied to detect and recognize the faulted poles directly without the requirements for long time delay.
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Line-Commutated Converters and Inverters
1977The method by which AC supply voltage is used for the commutation of conducting SCRs has been discussed in Chapter 6; it is very convenient for both rectification and inversion in phase-controlled bridge circuits and midpoint-connection circuits. This method of commutation is referred to as class F type of commutation (see Chapter 8), and is also known
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