Transient Oscillation Suppression Method of Modular Multilevel DC Transformer
IEEE Access, 2020 The modular multilevel DC transformer (MMDCT) is more likely to suffer from transient oscillation, which is caused by insufficient damping of the equivalent RLC circuit with smaller arm resistance and submodule capacitance and may threaten the system ...
Dan Lyu +5 more
doaj +1 more source
Design and application of squeeze film dampers for turbomachinery stabilization [PDF]
, 1975 The steady-state transient response of the squeeze film damper bearing was investigated. Both the steady-state and transient equations for the hydrodynamic bearing forces are derived; the steady-state equations were used to determine the damper ...
Allaire, P. E. +2 more
core +2 more sources
Transient Resonance Passage of a Mistuned Bladed Disk with and without Underplatform Dampers
International Journal of Turbomachinery, Propulsion and Power, 2023 In this work, the vibration response of an academic free-standing turbine blisk is analyzed in regard to transient resonance passages. Measurement data are recorded using strain gauges and tip timing to evaluate the blades first bending mode both ...
Katharina Brinkmann +3 more
doaj +1 more source
Damped and delayed sinusoidal model for transient signals [PDF]
IEEE Transactions on Signal Processing, 2005 In this work, we present the Damped and Delayed Sinusoidal (DDS) model: a generalization of the sinusoidal model. This model takes into account an angular frequency, a damping factor, a phase, an amplitude, and a time-delay parameter for each component.
R. Boyer, K. Abed-Meraim
openaire +1 more source
Transient ULF pulsations: time dependence of magnetic fields observed at the ground [PDF]
Annales Geophysicae, 1995 The continuum oscillation of a latitudinal range of closed geomagnetic field lines or shells appears to be a basic feature of the magnetosphere. Such oscillations are observed at the ground, and have been termed transient ULF pulsations.
W. Allan
doaj +1 more source
From subdiffusion to superdiffusion of particles on solid surfaces [PDF]
, 2004 We present a numerical and partially analytical study of classical particles obeying a Langevin equation that describes diffusion on a surface modeled by a two dimensional potential. The potential may be either periodic or random.
A. Gross +9 more
core +5 more sources
Inertia and Damping Collaborative Adaptive Control Strategy of Virtual Synchronous Generator
Journal of Harbin University of Science and Technology, 2019 Aiming at the problem of conventional distributed generation control technology that does not have the similarinertia and damping characteristics of synchronous generators, it can not teffectively resist frequency mutation caused by the micro-source ...
YAN Jing bin +3 more
doaj +1 more source
Stability of the Discrete Time-Crystalline Order in Spin-Optomechanical and Open Cavity QED Systems
Photonics, 2022 Discrete time crystals (DTC) have been demonstrated experimentally in several different quantum systems in the past few years. Spin couplings and cavity losses have been shown to play crucial roles for realizing DTC order in open many-body systems out of
Zhengda Hu, Xingyu Gao, Tongcang Li
doaj +1 more source
Leak detection in pipelines using the damping of fluid transients [PDF]
, 2002 © 2002 American Society of Civil EngineersLeaks in pipelines contribute to damping of transient events. That fact leads to a method of finding location and magnitude of leaks.
Angus R. Simpson +6 more
core +1 more source
Flutter and forced response of mistuned rotors using standing wave analysis [PDF]
, 1983 A standing wave approach is applied to the analysis of the flutter and forced response of tuned and mistuned rotors. The traditional traveling wave cascade airforces are recast into standing wave arbitrary motion form using Pade approximants, and the ...
Also M. +7 more
core +2 more sources