Essays about: "Frequency Dependent Load"

Showing result 1 - 5 of 23 essays containing the words Frequency Dependent Load.

  1. 1. Tribological characterization of a ball bearing subjected to an electric field : Electric drivetrain tribology

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

    Author : Muhammad Umar Farooq; [2023]
    Keywords : Ball bearing; electric drivetrain; tribology; electric field; characterization; bearing currents; discharge;

    Abstract : Electric machines are widely used in for instance the automotive industry in electric vehicles and in wind turbines. The electrical machines have mechanical bearings as an integral part used to transmit power and load. In addition, the main function includes reducing friction between interacting surfaces. READ MORE

  3. 2. Approximating Damping Coefficient of Bolted Joints using the Finite Element Method

    University essay from KTH/Hållfasthetslära

    Author : Abhiroop Chatterjee; [2023]
    Keywords : ;

    Abstract : Bolted joints are important due to their energy dissipation property in structures,but the damping mechanism is also highly nonlinear and localized. The goal ofthis thesis is to develop an accurate method for modeling bolted joint dampingin large structures using finite element (FE) software. READ MORE

  4. 3. Evaluation of key performance indices for frequency quality : A method for evaluating frequency stability in the Nordic power system

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

    Author : Sophia Larbi Engelbrektsson; [2023]
    Keywords : Ancillary Services; Kinetic Energy; Frequency Dependent Load; Frequency Stability; Frequency Quality; KPI; Nordic Power System; Frekvensberoende Last; Frekvenskvalité; Frekvensstabilitet; Kinetisk Energi; Nordiska Elsystemet; Nyckeltal; Stödtjänster;

    Abstract : The Nordic power system is in a changing phase, with more power electronic interfaced connections, and HVDC connections to other synchronous areas, which impacts the frequency quality. This is a challenge for the transmission system operator of Sweden, Svenska Kraftnät, who, with the other Nordic transmission system operators, is responsible for the physical balancing of the Nordic power system. READ MORE

  5. 4. Impact of energy storage technologies in a distribution grid : An analysis of Key Performance Indicators relating to a local grid’s performance characteristics

    University essay from Mälardalens högskola/Akademin för ekonomi, samhälle och teknik

    Author : Kevin Daun; [2021]
    Keywords : Energy Storage; Grid Flexibility; Key Performance Indicators; Power Grid; Variable Renewable Energy; Li-ion Battery; Supercapacitor; H2 Fuel Cell; Photovoltaic; Energy Storage Technologies;

    Abstract : The energy system is undergoing a transformation on a never before witnessed scale. The changes are driven by global market forces and technological advancements, improving on a seemingly exponential scale. READ MORE

  6. 5. Sizing and optimization of battery energy storage system for wind and solar power plant in a distribution grid : A case study on optimizing the size of the battery for peak shaving and ancillary services

    University essay from Uppsala universitet/Byggteknik och byggd miljö

    Author : Abubaker Siddiq; [2021]
    Keywords : ;

    Abstract : The increasing demand associated with the growing population poses a challenge to the operation of electricity systems worldwide. The electrification of the transport sector, accelerated electrification of industries and use of power demanding appliances in everyday life has increased the electricity demand significantly. READ MORE