Results 211 to 220 of about 511,304 (268)

Generator Excitation Loss Detection on Various Excitation Systems and Excitation System Failures

2020
Generating steadiness of synchronous generator is highly dependent on their exciter as the direct current from excitation system sustains stator and rotor windings magnetically coupled. But generator loss of excitation weakens stator and rotor coupling which result in mechanical and electrical power imbalance and rotor speed rise beyond synchronous ...
Alganesh Ygzaw   +2 more
openaire   +1 more source

Amplidyne main exciter excitation system

Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems, 1961
The amplidyne exciter combines the basic characteristics of a conventional commutator-type exciter with the buckboost amplidyne features presently used for voltage regulators. The power required to control this exciter is small, permitting new types of voltage regulators to be used and additional, previously impossible exciter functions to be performed.
L. M. Harvey   +3 more
openaire   +1 more source

Double excitations in finite systems

The Journal of Chemical Physics, 2009
Time-dependent density-functional theory (TDDFT) is widely used in the study of linear response properties of finite systems. However, there are difficulties in properly describing excited states, which have double- and higher-excitation characters, which are particularly important in molecules with an open-shell ground state.
Romaniello, Pina   +6 more
openaire   +4 more sources

On the role of frustration in excitable systems

Chaos: An Interdisciplinary Journal of Nonlinear Science, 2010
We study the role of frustration in excitable systems that allow for oscillations either by construction or in an induced way. We first generalize the notion of frustration to systems whose dynamical equations do not derive from a Hamiltonian. Their couplings can be directed or undirected; they should come in pairs of opposing effects like attractive ...
Pablo, Kaluza, Hildegard, Meyer-Ortmanns
openaire   +2 more sources

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