Sökning: "power stations"

Visar resultat 1 - 5 av 116 avhandlingar innehållade orden power stations.

1. 1. Wind power in thermal power systems

   Författare :Lisa Göransson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; integration; wind power; variation moderator; PHEV; storage;

   Sammanfattning : AbstractWind power is a key technology in the effort to transform the power system in order to reduce its climate impact. However, the ability of wind power to reduce CO2-emissions depends on the properties of the power system. LÄS MER

3. 2. Design and Characterization of RF-Power LDMOS Transistors

   Författare :Olof Bengtsson; Jörgen Olsson; Lars Vestling; Claes Beckman; Olof Tornblad; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Power Amplifiers; LDMOS transistors; RF-power; IMD; Technology CAD; Load-Pull; Electronics; Elektronik;

   Sammanfattning : In mobile communication new applications like wireless internet and mobile video have increased the demand of data-rates. Therefore, new more wideband systems are being implemented. LÄS MER

4. 3. Rum, rytm och resande : Genusperspektiv på järnvägsstationer

   Författare :Ann-Charlotte Gilboa Runnvik; Tora Friberg; Bodil Axelsson; Carina Listerborn; Katja Tollmar Grillner; Linköpings universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; HUMANIORA; HUMANITIES; Mobility; commuters; railway stations; accessibility; gender; body; space; place; affect; rhythm; participant observations; auto-ethnography; interviews; Mobilitet; pendlare; järnvägsstationer; tillgänglighet; genus; kropp; rum; plats; affekt; rytm; deltagande observation; autoetnografi; intervjuer;

   Sammanfattning : Järnvägsstationer är att betrakta som offentliga platser och regleras av transportpolitiska målsättningar om jämställdhet och tillgänglighet för alla (Prop. 2008/09:93). Trots det saknas forskning om hur genus påverkar resenärer vid deras vardagliga vistelser på järnvägsstationer. LÄS MER

5. 4. Cooperative Communications : Link Reliability and Power Efficiency

   Författare :Tafzeel ur Rehman Ahsin; Ben Slimane; Xavier Lagrange; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cooperative Communications; Link Reliability; Power Efficiency; Energy Efficiency; Network Coding; Cooperative Relaying; SRA - ICT; SRA - Informations- och kommunikationsteknik;

   Sammanfattning : Demand for high data rates is increasing rapidly for the future wireless generations, due to the requirement ofubiquitous coverage for wireless broadband services. More base stations are needed to deliver these services, in order tocope with the increased capacity demand and inherent unreliable nature of wireless medium. LÄS MER

7. 5. Main Circuits, Submodules, and Auxiliary Power Concepts for Converters in HVDC Grids

   Författare :Stefanie Heinig; Hans-Peter Nee; Staffan Norrga; Kalle Ilves; Rainer Marquardt; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ac–dc power conversion; energy storage; fault tolerance; HVDC converters; HVDC grid; isolated power supply; modular multilevel converter MMC ; power system faults; silicon carbide; submodules; voltage source converter VSC ; Electrical Engineering; Elektro- och systemteknik;

   Sammanfattning : In order to enable the massive introduction of renewable energies the need for high-voltage direct current (HVDC) grids is anticipated. Large, globally interconnected HVDC networks will likely be the most cost-efficient means to balance electricity demand and available generation. LÄS MER