Titlebook: Electrical Machine Dynamics; D. P. Sen Gupta,J. W. Lynn Textbook 1980Latest edition D. P. Sen Gupta and J. W. Lynn 1980 dynamics.electrica

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Small oscillations,ithin the machine inherently, due to the configuration of windings, as in an amplidyne cross-field generator, or externally, for example, in the form of a control system, or a voltage regulator on a d.c. generator. In a large power system, with synchronous generators interconnected through long line

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https://doi.org/10.1007/978-3-642-73806-7ting. These small oscillations may be (1) forced, or (2) self-excited, as in many physical systems. A diesel alternator may be subjected to forced oscillations due to cyclic variations in torque from the prime mover. It is essential therefore to determine the natural frequencies of the system and to

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Synchronous machine oscillations,nce, if an oscillating current ∆. sin (ω. + α) in a winding is superimposed upon a 50 Hz steady-state current 1 sin ., where ω. = .ω, then the additional average copper loss is . where the integration period is the common repetition time for the two oscillatory currents. This additional copper loss

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D. P. Sen Gupta and J. W. Lynn 1980

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Adalbert Duschek,August Hochrainerion, the magnitude, nature, and duration of the disturbing forces, and the calculation of the dynamical response. It is thus necessary to have detailed information about the parameters of the machine and the nature of nonlinear functions and saturation effects associated with them.