Results 171 to 180 of about 5,225 (215)
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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.
S. 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.
S. Tamai +3 more
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CLOSED MATHEMATICAL DESCRIPTION OF LINE COMMUTATED CONVERTER-DRIVES
IFAC Proceedings Volumes, 1983Abstract By shifting the solution of problems to the software of microprocessors any complex control structure in electrical drive engineering can be executed. This essential presumption for solving the problem this way is the exact mathematical description of the drive system in order to enable the microprocessor to get deeper insight into the state
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Generalized analysis of line commutated converters and close relatives
1987 IEEE Power Electronics Specialists Conference, 1987Various schemes have been proposed to improve the power displacement factor and distortion of large ac to dc converters by using either free-wheeling diodes and thyristors or forced commutation devices operating at low frequency. This paper presents a generalized analysis of those converters and shows that various existing configurations can be ...
G. Olivier +3 more
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MULTI-STEP LINE- AND SELF-COMMUTATED SINGLE-PHASE BRIDGE CONVERTER
IFAC Proceedings Volumes, 1977Abstract By means of fully controllable multi-step two-pulse bridge convertors d.c. loads as inverters or d.c. machines can be fed with variable voltage and current at increased line side power factor. These connections can be used for both rectifier- and inverter operation. Resistance braking is possible.
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Investigation of line-commutated three-phase converters with impedance unbalance
Proceedings of the 2010 Electric Power Quality and Supply Reliability Conference, 2010Current converters operated in unbalanced electrical three-phase systems will generally work asymmetrically, which causes the appearance of non-characteristic harmonics and therefore higher distortion levels. In this paper unbalances are considered, that are caused by asymmetrical AC-line short-circuit impedances, which are usually a result of ...
M. Weiland, G. Herold, T. Freudenstein
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Approximate dynamic average-value model for controlled line-commuted converters
2011 24th Canadian Conference on Electrical and Computer Engineering(CCECE), 2011Dynamic average-value modeling of power electronic-based systems has evolved and is widely used for system-level transient simulations and small-signal analysis. This paper presents an approximate average model for controlled line-commutated converters, which is developed based on the parametric average modeling methodology previously established for ...
Hamid Atighechi +2 more
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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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Analysis of line-commutated converters during unbalanced operating conditions
IEEE Transactions on Energy Conversion, 1994In this paper, a method of analyzing the salient performance characteristics of line-commutated power converters during unbalanced operating conditions is presented. Simple analytical relationships are established which relate the negative-sequence component of AC current to the negative-sequence component of voltage. These results are verified using a
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Sixth International Conference on AC and DC Power Transmission, 1996
Development of large-capacity, gate turn-off thyristors (GTOs) has led to a self-commutated power converter (SCC) system applicable to electric power transmission systems. During introduction of the SCC systems, a hybrid HVDC system composed of a conventional line-commutated converter (LCC) and the SCC was studied.
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Development of large-capacity, gate turn-off thyristors (GTOs) has led to a self-commutated power converter (SCC) system applicable to electric power transmission systems. During introduction of the SCC systems, a hybrid HVDC system composed of a conventional line-commutated converter (LCC) and the SCC was studied.
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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 +4 more
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