Search for dissertations about: "Grid Interaction."

Showing result 1 - 5 of 107 swedish dissertations containing the words Grid Interaction..

  2. 1. Numerical study on instability and interaction of wind turbine wakes

    Author : Sasan Sarmast; Dan. S. Henningson; Per-Åge Krogstad; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wind turbine wakes; Stability; interaction; POD; DMD; Teknisk mekanik; Engineering Mechanics;

    Abstract : Numerical simulations of the Navier-Stokes equations are conducted to achieve a better understanding of the behavior of wakes generated by the wind turbines. The simulations are performed by combining the in-house developed code EllipSys3D with the actuator line technique. READ MORE

  4. 2. In Romance with the Materials of Mobile Interaction : A Phenomenological Approach to the Design of Mobile Information Technology

    Author : Daniel Fällman; John A. Waterworth; Pieter Jan Stappers; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Människa-dator-interaktion; Mobile Interaction; Embodiment; Phenomenology; Design; Human-Computer Interaction; Människa-dator-interaktion; Information technology; Informationsteknologi; människa-datorinteraktion; människa-datorinteraktion;

    Abstract : This thesis deals analytically and through design with the issue of Human­Computer Interaction (HCI) with mobile devices; mobile interaction. Specifically, it is an investigation into and a capitalization on the multistable kinds of relations that arise between the threefold of human user, artifact, and world, and how dealing with this kind of technology and these relations in many ways must be regarded as different from mainstream HCI. READ MORE

  5. 3. Grid Code Testing of Wind Turbines by Voltage Source Converter Based Test Equipment

    Author : Nicolas Espinoza; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Grid Code; Low Voltage Ride Through LVRT ; Discrete Control; Wind Power; Voltage Source Converter VSC ; Grid Emulation.;

    Abstract : Wind energy is expected to play a crucial role in the energy mix in the future society with limited access to fossil fuels. Wind turbines with larger power rating are being installed every year, making possible to extract more energy from wind. READ MORE

  6. 4. Grid reinforcing wind generation

    Author : Nayeem Ullah; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; transient stability; variable speed wind turbine; long term voltage stability; short term voltage stability; frequency converter;

    Abstract : In this thesis, effects of some grid assisting possibilities that wind turbines could be equipped with, are investigated. The background is that concerns regarding the stability of the already existing power system in the presence of large wind farms have been risen. READ MORE

  7. 5. Multi-Agent Based Simulations in the Grid Environment

    Author : Dawit Mengistu; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Grid computing; Multi-agent Based Simulation; Performance Modeling; Performance Prediction;

    Abstract : The computational Grid has become an important infrastructure as an execution environment for scientific applications that require large amount of computing resources. Applications which would otherwise be unmanageable or take a prohibitively longer execution time under previous computing paradigms can now be executed efficiently on the Grid within a reasonable time. READ MORE