Voltage regulation approach to a self‐excited induction generator: Theoretical study and experimental validation
Sign Up to like & getrecommendations! Published in 2017 at "International Transactions on Electrical Energy Systems"
DOI: 10.1002/etep.2311
Abstract: Summary This article describes an accurate steady-state analysis of a stand-alone 3-phase self-excited induction generator (SEIG). This analysis, based on the Newton-Raphson algorithm, has shown that the system performance is greatly affected by the parameters… read more here.
Keywords: voltage; induction generator; excited induction; self excited ... See more keywords
Analysis of the non-periodic oscillations of a self-excited friction-damped system with closely spaced modes
Sign Up to like & getrecommendations! Published in 2021 at "Nonlinear Dynamics"
DOI: 10.1007/s11071-021-06893-3
Abstract: It is widely known that dry friction damping can bound the self-excited vibrations induced by negative damping. The vibrations typically take the form of (periodic) limit cycle oscillations. However, when the intensity of the self-excitation… read more here.
Keywords: periodic oscillations; friction; limit cycle; closely spaced ... See more keywords
The self-excited vibrations of an axially retracting cantilever beam using the Galerkin method with fitted polynomial basis functions
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Mechanical Science and Technology"
DOI: 10.1007/s12206-017-1204-z
Abstract: In the present study, the self-excited vibrations of an axially retracting beam under gravity is investigated. A GFB method is presented to discretize the system energy functions, in which the orthogonality relationships between the basis… read more here.
Keywords: basis functions; self excited; excited vibrations; method ... See more keywords
Controlling self-excited vibration using acceleration feedback with time-delay
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Dynamics and Control"
DOI: 10.1007/s40435-019-00577-y
Abstract: This paper investigates the control of vibration of a self-excited system, namely Rayleigh Oscillator, by using Acceleration Feedback Control method. In this control scheme, acceleration of the vibrating system is fed back to a second-order… read more here.
Keywords: control; self excited; feedback; delay ... See more keywords
Experimental Investigation of Self-Excited Combustion Instabilities with Injection Coupling in a Cryogenic Rocket Combustor
Sign Up to like & getrecommendations! Published in 2018 at "Acta Astronautica"
DOI: 10.1016/j.actaastro.2018.06.057
Abstract: Abstract The cryogenic LOX/H2 multi-injector research combustor “BKD” allows the investigation of high-frequency combustion instabilities under realistic conditions. Two different types of self-excited instabilities were observed. For one instability the underlying coupling mechanism was already… read more here.
Keywords: frequency; combustion; self excited; combustor ... See more keywords
Numerical study of the self-excited thermoacoustic vibrations occurring in combustion system
Sign Up to like & getrecommendations! Published in 2019 at "Applied Thermal Engineering"
DOI: 10.1016/j.applthermaleng.2019.113994
Abstract: Abstract Much attention has been paid to the effects of Reynolds number, equivalence ratio, and acoustic excitation on vibration frequency and amplitude in the previous studies on thermoacoustic vibrations, while little work has been published… read more here.
Keywords: vibration; thermoacoustic vibrations; combustion system; self excited ... See more keywords
Multi-objective optimization of self-excited oscillation heat exchange tube based on multiple concepts
Sign Up to like & getrecommendations! Published in 2021 at "Applied Thermal Engineering"
DOI: 10.1016/j.applthermaleng.2021.117414
Abstract: Abstract It is a typical multi-objective optimization problem for self-excited oscillation heat exchange tube to enhance heat transfer by limiting pressure drop. In this study, the conflict between heat transfer and pressure drop is solved… read more here.
Keywords: optimization; heat; objective optimization; excited oscillation ... See more keywords
Investigations of self-excited vibration in splitter plate with a cavity in the supersonic mixing layer
Sign Up to like & getrecommendations! Published in 2018 at "Aerospace Science and Technology"
DOI: 10.1016/j.ast.2018.01.009
Abstract: Abstract The combustion efficiency strongly depends on the mixing process of fuel–air for a combined cycle engine. For an efficient mixing process, self-excited vibration of splitter plate is more practical than that of forced vibration.… read more here.
Keywords: vibration; self excited; excited vibration; splitter plate ... See more keywords
Self-excited noise generation from laminar methane/air premixed flames in thin annular jets
Sign Up to like & getrecommendations! Published in 2021 at "Experimental Thermal and Fluid Science"
DOI: 10.1016/j.expthermflusci.2020.110321
Abstract: Self-excited noise generation from laminar flames in thin annular jets of methane/air premixture has been investigated experimentally. Various flames were observed in this flow configuration, including conical shape flames, ring shape flames, steady crown shape… read more here.
Keywords: shape; excited noise; noise generation; shape flames ... See more keywords
Light-powered self-excited bouncing of a liquid crystal elastomer ball
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Mechanical Sciences"
DOI: 10.1016/j.ijmecsci.2021.106686
Abstract: Abstract Light-powered self-excited motions of liquid crystal elastomers (LCEs) have great application prospects in the fields of actuators, soft robots, medical devices and micro-nano devices, and are capable of collecting energy directly from the environment… read more here.
Keywords: powered self; system; light powered; excited bouncing ... See more keywords
Experimental characterisation of the self-excited vibrations of spring-loaded valves
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Fluids and Structures"
DOI: 10.1016/j.jfluidstructs.2017.11.007
Abstract: Abstract Valves are omnipresent in industrial processes. As a result, they must perform reliably according to their specifications. Spring-loaded valves are particularly susceptible to vibrations, as they are inherently flexible, often operate at small openings,… read more here.
Keywords: spring loaded; self excited; characterisation self; loaded valves ... See more keywords