Essays about: "rotor dynamics"

Showing result 1 - 5 of 44 essays containing the words rotor dynamics.

  1. 1. Effects of load modelling on Voltage Impasse Regions (VIR)

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Maria Angeles Antolin Linan; [2019]
    Keywords : load models; power system dynamics; quasi-dynamic approach; voltage collapse; Voltage Impasse Regions VIR ; lastmodeller; kraftsystemdynamik; kvasi-dynamisk tillvägagångssätt; spänningskollaps; Voltage Impasse Region VIR ;

    Abstract : Voltage Impasse Region (VIR) is a phenomenon in power systemswhose dynamics are describe by a set of Differential AlgebraicEquations (DAE). VIR denotes a state-space area where voltagecausality is lost, i.e. the Jacobian of the algebraic part of DAEis singular. READ MORE

  2. 2. Thermal Loads in Space Turbines

    University essay from Luleå tekniska universitet/Rymdteknik

    Author : Emily Chen; [2019]
    Keywords : ;

    Abstract : Prediction of thermal loads within cavities in space turbine, has as been a challenging task  in aspects of achieving accurate and reasonable estimations that are crucial for design concepts. The difficulty lies within the turbulent flow and its thermal interaction with the structure inside such section. READ MORE

  3. 3. Experimental Investigation of Added Mass and Damping on a Model Kaplan Turbine for Rotor Dynamic Analysis

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Timmy Nyman; [2018]
    Keywords : Added mass; added damping; rotor dynamics; kaplan turbine; vibrations; fluid dynamics;

    Abstract : The concept of added hydrodynamic properties such as added mass is of importance in modern hydropower development, mainly for rotor dynamic calculations. Added mass could result in reduced natural frequencies and altered mode compared to existing simulation models. READ MORE

  4. 4. Detection and removal of wind turbine ice : Method review and a CFD simulation test

    University essay from Högskolan i Gävle/Energisystem

    Author : Ismael Bravo Jimenez; [2018]
    Keywords : renewable energy; wind turbine; ice accretion; flow simulation; CFD; wind turbine performance; anti-icing methods; de-icing methods.;

    Abstract : Nowadays, the energy sector is facing a huge demand that needs to be covered. Wind energy is one of the most promising energy resources as it is free from pollution, clean and probably will arise as one of the main energy sources to prevent global warming from happening. Almost 10% of the global energy demand is coming from renewable resources. READ MORE

  5. 5. Modelling and Identification of a RUAV

    University essay from Linköpings universitet/Reglerteknik; Linköpings universitet/Reglerteknik

    Author : Alaa Saeed; Mattias Mucherie; [2018]
    Keywords : ;

    Abstract : Modelling a linear mathematical model of a radio controlled (RC) helicopter in hover is the main goal of this thesis. The thesis introduces a general description about how RC-helicopters work and different phenomenons that effect the behaviour of a RC-helicopter. These phenomenons play an important role in the modelling part. READ MORE