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A method of improving power system transient stability using controllable parameters

Creator:: Mittelstadt, William Andrew
Abstract:: Controllable parameters in a power system include generator terminal voltage, generator input power and network admittances. These parameters can be controlled to damp mechanical rotor oscillation in the generators and thereby improve system transient stability. Explicit equations are derived in this thesis for the control of these parameters to introduce...
Resource Type:: Masters Thesis
Full Text:: equations are derived in this thesis for the control of these parameters to introduce damping uniformly

Development of adaptive damping power take-off control for a three-body wave energy converter with numerical modeling and validation

Creator:: Zhang, Zhe
Abstract:: The performance of the power take-off (PTO) system for a wave energy converter (WEC) depends largely on its control algorithm. This paper presents an adaptive damping control algorithm that improves power capture across a range of sea states. Validation for the numerical model was performed using data from two sources;...
Resource Type:: Masters Thesis
Full Text:: . Title: Development of Adaptive Damping Power Take-Off Control for a Three-Body Wave Energy Converter

A slotted line for ultra-high-frequency measurements

Creator:: Peoples, Samuel Ray
Resource Type:: Masters Thesis
Full Text:: of a wave- leìmth, however, which makes them extremely bulky when de- siried for use at ultra

On an integral equation occuring in the theory of wave propagation

Creator:: Weingarten, Fred Wesley
Resource Type:: Masters Thesis
Full Text:: AN INTEGRAL EQUATION OCCURRING IN THE THEORY OF WAVE PROPAGATION Abstract approved (Major professor

Tone burst deconvolution

Creator:: Rathja, Roy C.
Abstract:: The suitability of discrete least-squares optimal (Wiener) filters for deconvolution of tone-burst waveforms is studied. It is shown that: (1) such waveforms are not well suited to these filters without preprocessing, (2) the use of exponential weighting results in a significant improvement in filter performance and (3) that "phase-unwrapping" in...
Resource Type:: Dissertation
Full Text:: the leading edge (epoch detection) and the amplitude of the various fundamental wave- forms. The

The diffraction of cylindrical waves by two parallel half planes

Creator:: Soni, Raj Pal
Abstract:: The electromagnetic field produced by a line current oriented parallel to the edges of two perfectly conducting parallel half planes is considered. Maxwell's equations reduce to a single wave equation involving only one component of the electric field. Moreover the value of the field is zero on the two half...
Resource Type:: Dissertation

Numerical simulations of nonlinear baroclinic instability with a spherical wave-mean flow model

Creator:: Wang, Chunzai
Abstract:: A global, multi-level, wave-mean flow model based on an approximate version of the primitive equations is developed to investigate the development of a baroclinic wave field initially confined to a single zonal wavenumber. The effects of physical processes (surface drag and thermal damping) and internal diffusion on the evolution have...
Resource Type:: Masters Thesis
Full Text:: strengthens for very strong thermal damping. A steady wave state in which the wave amplitude equilibrates at

Slotted-bolted friction damper as a seismic energy dissipator in a braced timber frame

Creator:: Tjahyadi, Alfred
Abstract:: Friction dampers have been used successfully to dissipate seismic energy in steel and concrete structures. The application is new to timber structures. The objectives of this research were to design a slotted bolted connection (SBC) and evaluate its potential as a passive energy damper in timber brace. The research was...
Resource Type:: Masters Thesis
Full Text:: , fabrication tolerance reduced the equivalent viscous damping ratio to 0.3 and less for small displacements

Nonlinear dynamic analysis of heavy timber frame structures including passive damping devices

Creator:: Eiden, Claudia M. T.
Abstract:: Engineering analysis of heavy timber structures under dynamic loads is generally lacking. Some literature suggests that heavy timber structures are stiffer than expected, but popular engineering opinion is to the contrary. In addition, prior research has shown that passive friction dampers can be used in timber structures for the intended...
Resource Type:: Masters Thesis

Micro in-lab grid integration of a wave energy converter

Creator:: Okuda, Jeremy S.
Abstract:: Ocean wave energy has great potential to develop into a strong and reliable form of renewable energy. As the technology develops, more wave energy converters will be grid interconnected and the variable nature of the ocean will begin to influence the stability of the electrical grid system. There are many...
Resource Type:: Masters Thesis
Full Text:: , 2011. Title: Micro In-lab Grid Integration of a Wave Energy Converter Abstract approved

ScholarsArchive@OSU

A method of improving power system transient stability using controllable parameters

Development of adaptive damping power take-off control for a three-body wave energy converter with numerical modeling and validation

A slotted line for ultra-high-frequency measurements

On an integral equation occuring in the theory of wave propagation

Tone burst deconvolution

The diffraction of cylindrical waves by two parallel half planes

Numerical simulations of nonlinear baroclinic instability with a spherical wave-mean flow model

Slotted-bolted friction damper as a seismic energy dissipator in a braced timber frame

Nonlinear dynamic analysis of heavy timber frame structures including passive damping devices

Micro in-lab grid integration of a wave energy converter

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