Essays about: "Thevenin equivalent circuit"

Showing result 1 - 5 of 6 essays containing the words Thevenin equivalent circuit.

  1. 1. Lithium-ion battery modeling and SoC estimation

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

    Author : Ruoyu Xu; [2023]
    Keywords : lithium-ion battery; cell modeling; state of charge; extended Kalman filter; pack modeling; litiumjonbatteri; cellmodellering; laddningstillstånd; utökat Kalmanfilter; packmodellering;

    Abstract : The energy crisis and environmental pollution have become increasingly prominent in recent years. Lithium batteries have attracted extensive attention due to their high energy density, safety, and low pollution. To further study how the battery works, it is necessary to establish an accurate model conforming to the battery characteristics. READ MORE

  3. 2. Analytical approach to dimension transient currents in asymmetric VSC monopole

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

    Author : Sadra Varshochi; [2020]
    Keywords : HVDC; VSC; Transient; Analytical;

    Abstract : As an important part of robust design of an HVDC station, all HVDC equipmentshould stay safe and sound during steady state mode as well as transientcondition. In order to have a proper dimensioning for the equipment,maximum transient stress and current should be derived and calculated byperforming transient current studies. READ MORE

  4. 3. Reactive power management capabilities of Swedish sub-transmission and medium voltage level grid

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

    Author : Michal Tomaszewski; [2018]
    Keywords : electric power systems; reactive power; sub-transmission level grids; PSS E; power ow analysis; wind farms; smart grids; droop control; elektriska system; reaktiv eekt; mellan spanningsnivan; PSS E; strom odesanalys; vindkraftparker; smarta nat; droop control;

    Abstract : Rising penetration of renewable energy sources in electric power grids isboth a challenge and an opportunity to optimally utilize the potential of eitherwind or PV energy sources, to stabilize operation of future power systems.Bi-directional ows between distribution and transmission system operatorscause signicant problems with keeping the voltages in the grid within admissiblelimits. READ MORE

  5. 4. Modeling and Simulation of a Hybrid Powertrain

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

    Author : Martin Hedon; [2018]
    Keywords : Automotive; control strategy; hybrid powertrain; Matlab Simulink; stateflow; Thevenin equivalent circuit; Willans model; Bil; hybrid drivlina; kontrollstrategi; Matlab Simulink; stateflow; Thévenin-ekvivalent krets; Willans modell;

    Abstract : Hybrid powertrains represent the current trend on passenger cars. The purpose of thisreport is to create a basic model of a hybrid powertrain in Matlab/Simulinkenvironment and study their performance over certification driving cycle. Threecommonly used architectures are modeled and discussed in Simulink. READ MORE

  6. 5. Modelling of battery cooling for Formula Student application : 3D Simulation of air cooled lithium-ion battery with COMSOL Multiphysics®, applied on 2016 years KTH Formula Student car “EV12e”

    University essay from KTH/Energiteknik

    Author : Alexander Erik Magnusson; [2016]
    Keywords : ;

    Abstract : Electric and hybrid cars is one of the technologies to reduce the uses of fossil fuel. What is common with an electric car and a hybrid car is the use of battery to store electrical energy. To sustain high performance, long lifetime and to keep high safety in an electric vehicle it’s very important to control the temperature of the battery cells. READ MORE