Sökning: "off-shore wind power"

Hittade 5 avhandlingar innehållade orden off-shore wind power.

  1. 1. Sound propagation around off-shore wind turbines

    Detta är en avhandling från Stockholm : Byggvetenskap

    Författare :Lisa Johansson; KTH.; [2003]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wind turbine noise; off-shore wind powe; long-rage sound propagation; parabolic equation; scattering; water waves; TECHNOLOGY Civil engineering and architecture Building engineering; TEKNIKVETENSKAP Samhällsbyggnadsteknik och arkitektur Byggnadsteknik;

    Sammanfattning : Low-frequency, long-range sound propagation over a seasurface has been calculated using a wide-angel Cranck-NicholsonParabolic Equation method. The model is developed toinvestigate noise from off-shore wind turbines. Thecalculations are made using normal meteorological conditions ofthe Baltic Sea. LÄS MER

  2. 2. Energy-efficient Generating System for HVDC Off-shore Wind Turbine

    Detta är en avhandling från Stockholm : Byggvetenskap

    Författare :Poopak Roshanfekr; [2013]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; surface permanent magnet synchronous generator SPMSG ; IGBT active rectifier; high voltage direct current HVDC ; wind energy; dc-link voltage; synchronous reluctance generator SynRG ; annual energy efficiency; diode passive rectifier; finite element method FEM ; interior permanent magnet synchronous generator IPMSG ;

    Sammanfattning : This thesis investigates the design of energy efficient generating systems for off-shore wind turbines. For the generator part of the electric drive system, a surface mounted permanent magnet synchronous generator (SPMSG), an interior permanent magnet generator (IPMSG) as well as a synchronous reluctance generator (SynRG) have been investigated. LÄS MER

  3. 3. Design and Assessment of HVDC Off-shore Wind Turbine Generator

    Detta är en avhandling från Stockholm : Byggvetenskap

    Författare :Poopak Roshanfekr; [2015]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; annual energy efficiency.; permanent magnet assisted synchronous reluctance generator PMa-SynRG ; high voltage direct current HVDC ; wind energy; finite element method FEM ; maximum torque per ampere MTPA ; interior permanent magnet synchronous generator IPMSG ;

    Sammanfattning : In this work, design and assessment of a 5 MW wind energy generator with a gearbox is performed to find an energy-efficient generator for HVDC offshore wind turbines, studying aninterior permanent magnet synchronous generator (IPMSG) as well as a permanent magnetassisted synchronous reluctance generator (PMa-SynRG). Quantities such as torque density,torque ripple, losses and amount of magnet material are studied. LÄS MER

  4. 4. Vindkraft och lokala förankringsprocesser Perspektiv på deltagande, förståelse och acceptans

    Detta är en avhandling från Karlstad : Karlstads universitet

    Författare :Sanna Mels; Karlstads universitet.; [2016]
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; local consultation processes; off-shore wind power; planning; legitimacy; participation; förankring; havsbaserad vindkraft; planering; legitimitet; medborgardeltagande; Kulturgeografi; Human Geography;

    Sammanfattning : This study examines different meanings attached to and practices adopted during Swedish local consultation processes on offshore wind power projects. It analyses the role played by those processes in a democratic planning context, as well as the ways in which they are implemented. It also identifies overarching process models. LÄS MER

  5. 5. Optimal Long-Term Generation-Transmission Planning in the Context of Multiple TSOs

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Yaser Tohidi; KTH.; [2016]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Transmission-generation expansion planning; game theory; mathematical programming; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Power system transmission is undergoing rapid changes by the advent of renewable resources of energy, distributed generation, market integration, etc. Transmission planning is, nowadays, about building more inter-connections between adjacent regions or connecting off-shore wind farms to the grid or augmenting the network to support new path flows of energy and is still almost entirely the responsibility of regulated transmission system operator (TSO). LÄS MER