Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 613 for “"Stability analysis"”.
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Stability analysis of multicomponent systems.
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1973.
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Magnetic Stability Analysis for the Geodynamo
… Historically, workers have applied eigenvalue stability analysis and although in some cases Earth-like solutions have been found, the results hinge critically on the precise choice of flow. We therefore cannot attribute physical mechanisms in such cases since it is rather case dependent. …
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Stability analysis of edge corrugated shells
… involve buckling and sudden snap-through instability, which designers commonly address by adopting simplified methods, based on the use of empirical knock-down factors. This research stems from an original building in Rome, the Palazzetto Flaminio dome, designed by A. Vitellozzi and P. L. …
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Stability Analysis of Systems of Difference Equations
… Chapter 2 will apply that theory to the local stability analysis of systems of nonlinear difference equations. Finally, Chapter 3 will give some example of the types of models to which systems of difference equations can be applied.
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Voltage Stability Analysis Using Simulated Synchrophasor Measurements
… under stressed conditions, which are close to instability limits. Operating power systems under such conditions along with inadequate reactive power reserves initiates a sequence of voltage instability points and can ultimately lead to a system voltage collapse. Significant research have been …
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Stability Analysis of a High-Power Microgrid
… of this thesis is to perform the modeling and stability analysis of a high-power microgrid with multiple parallel-and grid connected voltage source converters using the system parameters from the high-power microgrid testbed at the National Center for Reliable Electric Power Transmission …
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Distributed nonlinear stability analysis of rotating stall
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1994.
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Stability analysis of supercritical water cooled reactors
… To ensure a proper design of SCWR without instability problems, the U.S. reference SCWR design was investigated. The objectives of this work are: (1) to develop a methodology for stability assessment of both thermal-hydraulic and nuclear-coupled stabilities under supercritical pressure …
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Stability Analysis of Unconstrained Receding Horizon Control Schemes
… inequality which allows to conclude asymptotic stability of the RHC closed loop and, in addition, to quantify the loss of performance in comparison to infinite horizon optimal control. To this end, a (stability) condition is derived based on a controllability assumption. Then, a sensitivity …
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Voltage stability analysis and control in power systems
Under the title of Voltage Stability Analysis and Control, three major subjects have been examined in this PhD project: the fundamental study of voltage stability, the on-line prediction method for voltage collapse, and secondary voltage control systems. The fundamental study was aimed to lay a …
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Mathematical Models and Stability Analysis of Cholera Dynamics
… generation matrix. We focus our attention on the stability analysis at the disease-free equilibrium which determines the short-term epidemic behavior, and the endemic equilibrium which determines the long-term disease dynamics. Particularly, we incorporate the Volterra-Lyapunov matrix theory into …
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PSCAD Modeling and Stability Analysis of a Microgrid
… in PSCAD, as well as investigate the transient instability of the microgrid when transitioning to islanded operation. Modeling techniques for both grid-connected and islanded operation of the microgrid are considered in this study. In addition to modeling techniques, the effectiveness of proper …
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Wind farm model for power system stability analysis
… and integral control. Modal and bifurcation analysis is performed revealing that WTG's variables do not exhibit major oscillatory behavior when the system is perturbed. Moreover, WTG's variables do not participate in unstable modes and they do not change the system stability structure. In …
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Finite element nonlinear stability analysis of framed structures
… element modelling techniques for the routine analysis of elastic-plastic stability problems in frame structures is addressed. The necessary models, solution procedure and geometric algorithm used for nonlinear stability analysis of frames are presented. An available finite element code, …
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Robust stability analysis for large-scale power systems
… to increase variability and uncertainty, making stability verification more challenging. This thesis extends the technique of robust stability analysis to large-scale electric power systems under uncertainty. In the first part of this thesis, we examine the use of the technique to solve real …
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Stability analysis of electromagnetically supported large space structures
… to provide restorative forces and torques, but instability of the system remains a concern. In this work, a validated methodology is developed for identifying pseudo-passive equilibria and classifying them as statically and dynamically stable or unstable and is applied to a series of …
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A boiling water reactor simulator for stability analysis
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1996.
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Stability analysis of spatially dependent nonlinear reactor systems
… approximation is considered in this thesis. Stability criteria for equilibrium states of various reactor feedback models are determined by the methods of Liapunov, semigroup and comparison functions. Comparison of the three approaches are made with respect to applicability to various models …
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Stability analysis of large-scale power electronics systems
… is proposed to investigate the large-signal stability of interconnected power electronics systems. The approach consists of decoupling the system into a source subsystem and a load subsystem, and stability of the entire system can be analyzed based on investigating the feedback loop formed by …
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