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Now showing items 31-40 of 45
Generalized Analytic Signal Construction and Modulation Analysis
(2018-04-02)
This thesis deals with generalizations of the analytic signal (AS) construction proposed by Gabor. Functional extensions of the fractional Hilbert Transform (FrHT) are proposed using which families of analytic signals are ...
Phase Retrieval and Hilbert Integral Equations – Beyond Minimum-Phase
(2018-07-18)
The Fourier transform (spectrum) of a signal is a complex function and is characterized by the magnitude and phase spectra. Phase retrieval is the reconstruction of the phase spectrum from the measurements of the magnitude ...
Operation of Three Phase Four Wire Grid Connected VSI Under Non-Ideal Conditions
(2018-04-12)
The necessity to incorporate renewable energy systems into existing electric power grid and need of efficient utilization of electrical energy are growing every day. A shunt connected Voltage Source Inverter(VSI) capable ...
Sparsity Motivated Auditory Wavelet Representation and Blind Deconvolution
(2018-08-29)
In many scenarios, events such as singularities and transients that carry important information about a signal undergo spreading during acquisition or transmission and it is important to localize the events. For example, ...
Trajectory-based Descriptors for Action Recognition in Real-world Videos
(2018-07-30)
This thesis explores motion trajectory-based approaches to recognize human actions in
real-world, unconstrained videos. Recognizing actions is an important task in applications
such as video retrieval, surveillance, ...
Effective Characterization of Sequence Data through Frequent Episodes
(2018-08-14)
Pattern discovery is an important area of data mining referring to a class of techniques designed for the extraction of interesting patterns from the data. A pattern is some kind of a local structure that captures correlations ...
Modeling and Analysis of Grid Connected Variable Speed Wind Generators
(2018-08-13)
The growing demand for power and increased environmental concerns gave an impetus to the growth of clean and renewable energy sources like wind, solar etc. There is a remarkable increase in the penetration of wind energy ...
Integrated CM Filter for Single-Phase and Three-Phase PWM Rectifiers
(2018-08-11)
The use of insulated-gate bipolar transistor (IGBT)-based power converters is increasing exponentially. This is due to high performance of these devices in terms of efficiency and switching speed. However, due to the ...
Experimental Studies on Acoustic Noise Emitted by Induction Motor Drives Operated with Different Pulse-Width Modulation Schemes
(2018-08-13)
Voltage source inverter (VSI) fed induction motors are increasingly used in industrial and transportation applications as variable speed drives. However, VSIs generate non-sinusoidal voltages and hence result in harmonic ...
Lightning Shielding Failure Analysis of Ultra High Voltage Power Transmission Lines
(2018-08-14)
In India, the natural energy resources (thermal and hydro) are unevenly distributed and are mostly present in the remote areas and the load centers are distributed across various regions of the country. Therefore high ...