Search for dissertations about: "frequency analysis"
Showing result 6 - 10 of 1667 swedish dissertations containing the words frequency analysis.
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6. Advanced Spectral Analysis with Applications
Abstract : Spectral analysis has advanced the last decades as a signal processing tool to extract significant information about certain properties of measured data. The practical use of spectral analysis techniques in time-series analysis has been emphasized in the immense amount of previous literature in the field and by a rapidly growing number of applications. READ MORE
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7. Analysis of VSC-based HVDC systems
Abstract : The main objective of this thesis is to perform stability and control studies in the area of VSC-HVDC systems. A major part of the investigation focuses on the development of procedures, whose aim is to understand, explain and avoid poorly-damped conditions or instability that may appear due to dc-side resonances, which stem from the interaction of converters and passive elements in such systems. READ MORE
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8. Bandwidth-reduced Linear Models of Non-continuous Power System Components
Abstract : Denna avhandling är fokuserad på modellering av elkraftsystemkomponenter och deras representation vid simuleringar av elkraftsystem. Avhandlingen jämför olika linjäriseringstekniker. Dessa tekniker är såväl numeriska som analytiska och används vid linjärisering av ett dynamiskt system. READ MORE
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9. Methods in time-frequency analysis
Abstract : .... READ MORE
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10. Two-Dimensional Signal Root Estimation in Blind Multichannel Impact Response Analysis
Abstract : This doctoral dissertation concerns two-dimensional frequency estimation for modal analysis of single-input multiple-output impact responses from circularly cylindrical objects. The application is within detection of internal defects in trunks of spruce. READ MORE