Results 251 to 260 of about 266,119 (301)
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Variable structure power stabiliser to supplement static-excitation systems
Proceedings of the Institution of Electrical Engineers, 1976One of the weaknesses of the small-perturbation theory when applied to power-system stability is that the system differential equations must be linearised with respect to an operating point since they are fundamentally nonlinear. One of the most prominent nonlinear effects is due directly to the loading condition, that is the real and reactive power ...
Y.L. Abdel-Magid, G.W. Swift
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Excitation of oscillations in nonlinear systems under static feedback
2004 43rd IEEE Conference on Decision and Control (CDC) (IEEE Cat. No.04CH37601), 2004New conditions for oscillatority of a system in the sense of Yakubovich (1973) are proposed. These conditions are applicable to nonlinear systems decomposed into two nonlinear parts. Upper and lower bounds for oscillation amplitude are obtained. The relation between the oscillatority bounds and excitability indices for the systems with the input are ...
D.V. Efimov, A.L. Fradkov
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Applying Static Excitation Systems
IEEE Industry Applications Magazine, 1998Many power generation plants in the pulp and paper industry are faced with high maintenance and downtime due to the excitation system. DC field breakers, motor driven rheostats, rotating exciter failures, commutator deterioration, and replacement parts for the automatic voltage regulator (AVR) are just a few of the problems typical of these aged power ...
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Retrofitting static exciter regulators for rotating exciter systems
Conference Record of Annual Pulp and Paper Industry Technical Conference, 2003The author reviews the various rotating exciter systems and their retrofitting to new static exciter excitation equipment. It is noted that, where rotary exciter rewinding and general excitation system upgrading is considered, the shunt static exciter regulator represents an attractive alternative to power plant life extension.
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Application of static excitation systems for rotating exciter replacement
Conference Record of 1997 Annual Pulp and Paper Industry Technical Conference, 2002Many power generation plants in the pulp and paper industry are faced with high maintenance and down time due to the excitation system. DC field breakers, motor driven rheostats, commutator deterioration, and replacement parts for the automatic voltage regulator (AVR) are just a few of the problems typical of these aged power plants. The result is high
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About the static excitation system with a fully controlled rectifier
Eurocon 2013, 2013The paper analyzes the potential influence of a rectifier fully controlled with thyristors (RFCT) over some components of a power group with static switching. Problems related to the active power flows in distorting and/or non-symmetric regime are briefly presented.
Petre-Marian Nicolae +1 more
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Stabilization via parametric excitation of multi-dof statically unstable systems
Communications in Nonlinear Science and Numerical Simulation, 2014zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Arkhipova IM, LUONGO, Angelo
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Brushless rotating exciter conversion to main field static exciter system
Conference Record of 2013 Annual IEEE Pulp and Paper Industry Technical Conference (PPIC), 2013In the 1960s, many generator manufacturers began providing large scale brushless rotating exciters for use on a variety of turbine generator applications. The brushless exciters became increasingly popular in the 1970s through the present. Prior to brushless excited generators, rotating exciters were all rotating brush type which required brushes and ...
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Performance evaluation of static Excitation System of Tarbela Power Station
2016 International Conference on Computing, Electronic and Electrical Engineering (ICE Cube), 2016Generator Excitation System is used to provide the DC supply to the field winding for producing the magnetic field in the generator. It is considered as a main part and backbone of the generator. Excitation system also provides stability of the power system by controlling the system voltages which can be enhanced for considering some key factors.
Muddasar Nawaz +3 more
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A new generator static excitation system using boost-buck chopper
Proceedings of the 1996 IEEE IECON. 22nd International Conference on Industrial Electronics, Control, and Instrumentation, 1996A new generator excitation system using a boost-buck chopper as a kind of static exciter is proposed to overcome the lack of field forcing capability of the bus fed exciter under the input line fault condition. It increases or maintains the generator field current by boosting the field voltage in the case of the input AC line voltage drop during and ...
null Hong-Woo Rhew +2 more
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