Essays about: "Rotor dynamic"

Showing result 6 - 10 of 29 essays containing the words Rotor dynamic.

  1. 6. Fretting in Wind Power Pitch Bearings: Micro-Slip Experiments and Bearing Test Rig Design

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Román De La Presilla; [2020]
    Keywords : Fretting; Pitch Bearing; Lubrication.; Fretting; Rotorbladslager; Smörjning;

    Abstract : Wind power is the fastest-growing form of green energy production in Europe, today accounting for 15% of the total power demand with 100.000 turbines installed. READ MORE

  3. 7. Design and construction of a contactless excitation and response measurement system

    University essay from KTH/Industriell produktion

    Author : Johan Westlund; [2019]
    Keywords : Rotor dynamic; Electromagnet; Contactless excitation; LabVIEW; Measurement instruments; Force control; CERS; Rotordynamik; Elektromagnet; Kontaktlös exitation; LabVIEW; Kraftkontroll; CERS;

    Abstract : Manufacturing industry works on Overall Equipment Effectiveness (OEE) to increase the yield and speed of machining. A good knowledge of the machine properties is important to increase the speed while still maintaining stable cutting with low tool usage. READ MORE

  4. 8. 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

  5. 9. 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

  6. 10. AERODYNAMIC FORCING & DAMPING COMPUTATIONS IN A TRANSONIC AXIAL TURBINE OF A TURBOCHANRGER USING TIME & FREQUENCY DOMAIN FLOW TRANSFORMATION TECHNIQUES

    University essay from KTH/Energiteknik

    Author : Aravin Dass Naidu; [2016]
    Keywords : ;

    Abstract : The current report discusses efficient and accurate numerical techniques to evaluate aerodynamic disturbance and damping forces based on investigations carried out at ABB Turbo System AG. The test turbomachine comprises a single-stage transonic axial turbine analysed with the fluid dynamic software ANSYS CFX 17.0 and post-processing tool Matlab. READ MORE