Search for dissertations about: "fundamental limits"

Showing result 11 - 15 of 141 swedish dissertations containing the words fundamental limits.

2. 11. Fundamental Control Performance Limitations for Interarea Oscillation Damping and Frequency Stability

   Author : Joakim Björk; Karl H. Johansson; Lennart Harnefors; Joe H. Chow; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Power system control; HVDC transmission control; interarea oscillations; power oscillation damping; small-signal stability; fundamental control limitations; frequency stability; hydro power; wind power; non-minimum phase; zero dynamics; eigenvalue analysis; Electrical Engineering; Elektro- och systemteknik;

   Abstract : With the transition towards renewable energy and the deregulation of the electricity markets, the power system is changing. Growing electricity demand and more intermittent power production increase the need for transfer capacity. Lower inertia levels due to a higher share of renewables increase the need for fast frequency reserves (FFR). READ MORE

4. 12. Limitations on efficiency, size and bandwidth of small antennas

   Author : Daniel Nyberg; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; log-periodic antennas; Small antennas; folded dipoles; radiation Q; fundamental limitations; bandwidth;

   Abstract : The allocated space in a mobile phone for the antennas has become smaller and smaller following the size reduction of the mobile phones themselves and the integration of more functions in them. At the same time new communication systems are being planned where such small antennas also need to be wideband (UWB systems) or have multiple ports (MIMO systems). READ MORE

5. 13. Computational Tools for Antenna Analysis and Design

   Author : Doruk Tayli; Teoretisk elektroteknik; []
   Keywords : Antenna theory; Fundamental bounds; method of moments MoM ; Characteristic modes; macro basis functions MBFs ; adaptive cross approximation ACA ; endfire arrays;

   Abstract : Many engineers and scientists prevalently use computational tools in electromagnetics, which is also the predominant case for antennas. The ever-increasing number of applications and technologies that employ antennas create a constant demand to improve and extend existing tools and develop new ones. READ MORE

6. 14. EU Law and Religion : A Study of How the Court of Justice has Adjudicated on Religious Matters in Union Law

   Author : Emma Ahlm; Petra Herzfeld-Olsson; Joel Samuelsson; Lucy Vickers; Uppsala universitet; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; European law; EU law; law and religion; non-discrimination law; fundamental rights; religious equality; freedom of religion; state-church relations; Europarätt; European Integration Law;

   Abstract : This study has caught a legal development in the making. The Court of Justice has, over the last ten years, developed a body of case law relating to religious matters in connection to EU law which spans a wide range of subject areas; non-discrimination law, data protection, state aid, animal welfare and slaughter rules. READ MORE

7. 15. Experimental and Numerical Investigations of Flames Stabilized by Swirl Flow and Bluff-body:Flame Structures and Flame Instabilities

   Author : Yiheng Tong; Kraftverksteknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Flame structures; Flame instabilities; Blowout limits; Flashback; Swirl Flow; Bluff-body; Chemiluminescence; PIV;

   Abstract : Combustion and its control are essential to our existence on this planet since we knew it. Nowadays, the largest share of the world’s electricity and most of our transportation systems are powered by combustion. In addition, industrial processes also rely heavily upon combustion. READ MORE