Essays about: "three-phase transformer"

Showing result 1 - 5 of 8 essays containing the words three-phase transformer.

  1. 1. Microgrid Protection Strategies for the Swedish Power System

    University essay from Lunds universitet/Institutionen för energivetenskaper

    Author : Zalak Shah; [2023]
    Keywords : Microgrid; Protection; three-phase fault; earth fault; Technology and Engineering;

    Abstract : This thesis mainly focuses on the protection strategies of microgrids for the Swedish power system in the medium voltage distribution system and specifically on the three-phase fault and earth faults protection strategies. For the analysis of both faults, different grid-connected, and islanding operations are simulated using DIgSILENT Power Factory. READ MORE

  3. 2. Simulation of Transformer Inrush Currents and Their Impact on the Grid

    University essay from Lunds universitet/Industriell elektroteknik och automation

    Author : Juan de la Peña Toledo; [2022]
    Keywords : Transformer; Energization; PSS E; PSCAD; Simulation; Magnetizing current; Inrush current; Technology and Engineering;

    Abstract : This MSc Thesis’s main objective is to determine the impact of transformer inrush currents in the grid and develop a tool that helps E.ON Energidistribution AB evaluate transformer sizing. The motivation of E. READ MORE

  4. 3. Study of an Isolated and a Non-Isolated Modular DC/DC Converter : In Multi-Terminal HVDC/MVDC grid systems

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

    Author : Ranjithh Raj Ram Prakash; [2019]
    Keywords : High power high voltage DC-DC converter; Isolated non-isolated DC-DC converter; HVDC MVDC interconnection; HVDC HVDC point-to-point link; Modular multilevel converter; Transformer driven MMC; Steady state transient DC fault analysis; High Power DC DC-omvandlare med hög spänning; Isolerad och icke-isolerad DC-DC-omvandlare; HVDC MVDC-anslutning; HVDC HVDC-punkt-till-punkt-länk; Modulär multilevelomvandlare; Transformatorstyrd MMC; Stabilitet DC felanalys;

    Abstract : För sammankoppling av multi-terminala HVDC-system med punkt-till-punkt kopplingar ärDC-DC-omvandlaren den enda möjliga sammankopplingen. Därför genomgår problemenmed spänningsmatchning och likspänningsströmbegränsning i högspännings DC-systemomfattande forskning samt ligger i fokus för denna avhandling. READ MORE

  5. 4. Grounding of distrubution grids : High impedancegrounding compared to solid grounding with Fault Current Limiter

    University essay from

    Author : Maria Kättström; [2017]
    Keywords : ;

    Abstract : Today cables replace overhead lines in distribution systems and cause higher system capacitance and higher capacative fault currents. This fault current, in the fault location, is limited by a Petersén coil and a resistance in parallel when a fault occurs in so called “high impedance grounded systems” which are commonly used in Europe. READ MORE

  6. 5. Kilowatt Three-phase Rotary Transformer Design for Permanent Magnet DC Motor with On-rotor Drive System

    University essay from Mittuniversitetet/Avdelningen för elektronikkonstruktion

    Author : Ye Xu; [2016]
    Keywords : contactless energy transfer; transformer power loss; iron loss; iron loss model; rotary transformer; three-phase transformer; finite element method; COMSOL Multiphysics; electrical steel; electrical steel manufacturing process;

    Abstract : The aim of this thesis is to design a kilowatt three-phase step-down rotary transformer for a permanent magnet DC motor. The permanent magnet DC motor has an on-rotor drive system, and therefore requiring a power supply that can transfer power to its drive unit without mechanical contact. READ MORE