Sökning: "Transient dynamic response"

Visar resultat 1 - 5 av 23 uppsatser innehållade orden Transient dynamic response.

  1. 1. Mitigating SSCI in a hybrid wind and PV farm utilizing PV-STATCOM : A Swedish case study

    Master-uppsats, Högskolan Dalarna/Institutionen för information och teknik

    Författare :Isabelle Löfgren; [2022]
    Nyckelord :impedance analysis; PV-STATCOM; SSCI; SSO; SSR; sub-synchronous control interaction;

    Sammanfattning : The share of electricity generation in the power system being based on power electronics is increasing, which will impact the system in different ways, such as an increased risk for undesired interactions. An example is doubly fed induction generator (DFIG) based windfarms which have been shown to present negative resistance in (parts of) the sub-synchronous range (i. LÄS MER

  3. 2. Wood and moisture-induced strains in a large deformation setting in 3D

    Master-uppsats, Linnéuniversitetet/Institutionen för byggteknik (BY)

    Författare :Fredrik Ström; Anwar Obeido; [2022]
    Nyckelord :Total Lagrangian; Finite element method; Large deformation theory; Deformation gradient decomposition; Moisture-induced strains; Hygroscopic; Orthotropic.;

    Sammanfattning : Many studies have previously been done on moisture-induced strains in wood. An in- finitesimal/engineering strain model has been used for most of these studies, which is often an accurate approximation for small rotations. However, if large deformations oc- cur, then fictive strains are obtained resulting from the simplified engineering strain. LÄS MER

  4. 3. Evaluation of Active Rear Steering through Multi-Body Simulation

    Master-uppsats, KTH/Väg- och spårfordon samt konceptuell fordonsdesign

    Författare :Matteo Rossi; Gabriele Bertoli; [2021]
    Nyckelord :Vehicle dynamics; Active rear steering; active systems; automotive; MBS; Simpack; Volvo; CAE; single-track model; bicycle model; feedforward control; Vehicle dynamics; Active rear steering; active systems; automotive; MBS; Simpack; Volvo; CAE; single-track model; bicycle model; feedforward control;

    Sammanfattning : The goal of this thesis work is to evaluate and quantify the advantages and disadvantages of Active Rear Steering (ARS). The evaluation is carried out through Multi-Body System (MBS) simulations. An analytical model has been developed to better understand the basic dynamics of vehicles equipped with rear steering. LÄS MER

  5. 4. Transient Performance of Siemens SGT-750 and SGT-800 : Modeling and Simulations of Industrial Gas Turbines on Island Grids

    Master-uppsats, Umeå universitet/Institutionen för tillämpad fysik och elektronik

    Författare :Alexander Raddum; [2020]
    Nyckelord :Gas Turbine; Transients; Simulation;

    Sammanfattning : Distributed energy production in the form of renewable energy sources are expected to increase in the coming years, a consequence of this is instability of the power grids due to the stochastic nature and lack of inertia of renewable energy sources. In addition, small and local, so called island grids, are on the rise and these system may present an even higher sensitivity to frequency fluctuations. LÄS MER

  7. 5. Dynamic Temperature Model of an Automatic Transmission

    Master-uppsats, Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Författare :Yao Zhang; [2019]
    Nyckelord :Dynamic model; transmission; gearbox; temperature; lumped box;

    Sammanfattning : This report presents the development of a dynamic temperature model for an automatic transmission in a Volvo Cars passenger vehicle. The model should simulate the oil to cooler temperature and flow from the transmission. A mathematical approach to use lumped masses for different parts of the transmission was used. LÄS MER