Sökning: "stability parameter"
Visar resultat 1 - 5 av 204 avhandlingar innehållade orden stability parameter.
1. Numerical investigation of self-excited vibrations of a compressor cascade
Sammanfattning : .... LÄS MER
2. Effects of warming and nutrient enrichment on feeding behavior, population stability and persistence of consumers and their resources
Sammanfattning : Consumer-resource interactions are the basic building blocks of every food web. In spite of being a central research theme of longstanding interest in ecology, the mechanisms governing the stability and persistence of consumer-resource interactions are still not entirely understood. LÄS MER
3. Nyquist Stability Analysis of a VSC-HVDC System with a Distributed Parameter DC-cable Model
Sammanfattning : Voltage source converter based high voltage direct current (VSC-HVDC) transmission systems have now been in operation since 1997 as it is a reliable and flexible method of power transmission. This thesis focuses on small signal dynamics of such systems, emphasizing stability properties. LÄS MER
4. Stability of statically and periodically loaded structures
Sammanfattning : In this thesis different kinds of stability phenomena are analysed. Firstly the quasi-static behaviour of an elastic structure is studied for increasing loading. LÄS MER
5. On the robust stability analysis of VSC-HVDC systems
Sammanfattning : This thesis focuses on small signal stability analysis of VSC-HVDC systems, emphasizing the system stability robustness with regard to the connected AC-grid and the distributed parameter DC-grid model respectively. In addition, for strong AC-grid connected systems, analytical eigenvalue expressions are provided to investigate the impact of physical or control parameters on the system stability for both two-terminal and multi-terminal VSC-HVDC systems. LÄS MER