Search results for "Mechanical Oscillations"

showing 3 items of 3 documents

Parametrical Optomechanical Oscillations in PhoXonic Whispering Gallery Mode Resonators

2019

AbstractWe report on the experimental and theoretical analysis of parametrical optomechanical oscillations in hollow spherical phoxonic whispering gallery mode resonators due to radiation pressure. The optically excited acoustic eigenmodes of the phoxonic cavity oscillate regeneratively leading to parametric oscillation instabilities.

0301 basic medicinePhysics::Opticslcsh:MedicineArticlemicrobubbles03 medical and health sciencesResonatorwhispering gallery mode resonators0302 clinical medicineOpticswhispering gallery modeslcsh:SciencePhysicsMultidisciplinarymicrobubble resonatorsbusiness.industryParametric oscillationlcsh:RUNESCO::FÍSICA::Óptica ::Fibras ópticasstimulated brillouin scatteringkerr modulation030104 developmental biologyRadiation pressureOptics and photonics:FÍSICA::Óptica ::Fibras ópticas [UNESCO]Excited stateOther photonicsparametrical optomechanical oscillationslcsh:QWhispering-gallery wavebusiness030217 neurology & neurosurgeryScientific Reports
researchProduct

Power System Oscillations with Different Prevalence of Grid-Following and Grid-Forming Converters

2022

The oscillatory behaviour of the power system is an aspect that is significantly affected by the increasing integration of converter-based generation sources. Several works address the impact of non-synchronous generation on the operation of the system from different points of view, but only a few studies focus on power-frequency oscillations with a prevalence of generation sources interfaced through power electronics. A lack of research can be found in particular in the comparative analysis of the two main control strategies for power converters, namely grid-following and grid-forming. The article aims to contribute to this direction, starting from a theoretical analysis of the two control…

Control and Optimizationdampingvirtual synchronous machineRenewable Energy Sustainability and the EnvironmentEnergy Engineering and Power TechnologyBuilding and Constructionelectromechanical oscillationinertiadamping; electromechanical oscillations; grid-following; grid-forming; inertia; phase-locked loop; power converters; virtual synchronous machinegrid-formingphase-locked looppower convertergrid-followingElectrical and Electronic EngineeringEngineering (miscellaneous)Energy (miscellaneous)
researchProduct

Teaching mechanical oscillations using an integrate curriculum

1997

Abstract A set of teaching materials dealing with harmonic oscillations was developed as part of a research project investigating the influence of different pedagogical tools on physics learning. The materials incorporate simulation software and laboratory activities associated with Teacher and Student Units. The project involved research groups at seven Italian universities and the materials have been trialled in high schools nation‐wide. This paper describes the experimental protocol for the use of these materials in pilot classes and the evaluation of student learning and teacher training results. The intervention was found to improve physics education at school praxis level and to promo…

Protocol (science)Sociology of scientific knowledgePraxisContent areaLaboriatorymedia_common.quotation_subjectPhysics educationOn-line measurementsinnovative apprachesIntegrated curriculumcomputer.software_genreEducationSimulation softwarePhysics EducationSeven Italian universities coordinationMechanical OscillationsPhysics Education; Mechanical Oscillations; Laboriatory; On-line measurementsComputingMilieux_COMPUTERSANDEDUCATIONMathematics educationstudents difficultieSet (psychology)computermedia_common
researchProduct