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Now showing items 21-30 of 126
Investigation of the effects of humidity and surface charge on partial discharge in insulator posts under DC voltage
(2020-03)
The flashover mechanism and performance of insulators have always been significant of importance to insulation engineers’ attention. A serious flashover accident will damage insulators and influence the reliability of the ...
Design and implementation of a high-bandwidth switching power amplifier using FPGA-based boundary control
(2020)
Power amplifiers are critical components for audio, grid simulator and Power Hardware-in-the-Loop (PHIL) applications with the requirement of low cost, high bandwidth and fast dynamics. This thesis proposed an innovative ...
Multi-terminal HVDC (MTHVDC) interaction studies using small signal stability assessment
(2020-12)
With the development of technology, the HVDC system becomes more and more attractive in modern power systems. Tapping on existing HVDC lines becomes a practical option to deliver reliable power to the customer. However, ...
Dynamic system equivalents using integrated PSS/E and Python for transient stability studies
(2021-03)
Transient stability studies are required to be carried out for an efficient and secure operation of power systems. However, due to the limitations of computer memory and processing speed, handling a complete set of DAEs ...
Stability and accuracy of electromagnetic transient simulation algorithms
(2020-12-01)
The main topic of this Ph.D. program is focus on the numerical stability and accuracy of Electromagnetic transient simulations.
In the first part of this thesis, novel techniques are developed to evaluate the stability.
Firstly, ...
Deep learning techniques applied to the remote sensing of soil moisture and sea ice type
(2021)
This thesis presents deep learning techniques applied to the modeling of geophysical quantities with remote sensing data to estimate soil moisture and classify sea ice type. The objective of the thesis is to determine if ...
Metasurface design using electromagnetic inversion
(2020-12)
This thesis presents the theory and development of a framework for the design of electromagnetic metasurfaces. These metasurfaces can be used to systematically transform an incident electromagnetic field into a different ...
Comparison of dynamic characteristics of virtual synchronous machine control algorithms
(2020)
Renewable energy sources and energy storage systems will hold increasingly significant positions in modern power systems. These systems utilize power-electronic converters as the medium for connection to the grid. The ...
Spectral unmixing and anomaly detection for hyperspectral images
(2020-08-27)
Least Angle Regression (LARS) solves the basis pursuit optimization problem, as a sparse signal recovery algorithm, for all relevant regularization parameter values simultaneously. However, despite this efficiency of LARS, ...
Frequency scan based stability analysis of power electronic systems
(2021-01-29)
Frequency scanning is a numerical method for extracting the frequency response of a power electronic system (PES). This technique is performed via injecting a small-amplitude wide-band signal in the time-domain simulation ...