Sökning: "transformer winding"

Visar resultat 1 - 5 av 26 uppsatser innehållade orden transformer winding.

  1. 1. Konditionsbedömning av en grupp transformatorer på Forsmark kärnkraftverk : Modellbaserad åldringsanalys av transformatorer

    Master-uppsats, Uppsala universitet/Institutionen för fysik och astronomi

    Författare :Samuel Sjöqvist; [2023]
    Nyckelord :Transformator; elkraft; energisystem; kärnkraft; åldrandehantering;

    Sammanfattning : This thesis used a model-based approach to assess the condition of a group of transformers at Forsmark nuclear plant. Since it’s problematic for practical and economic reasons to examine the paper insulation by inspection, this approach was chosen. LÄS MER

  3. 2. Characterizing coil windings noise due to compressive fault currents : A study to determine if there is a characteristic noise from transformer windings due to fault currents

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Simon Lundgren; [2022]
    Nyckelord :Transformer windings; short circuit forces; current pulses; microphone; Comsol Multiphysics; FFT; Transformator lindningar; strömpulser; mikrofon; kortslutingskrafter; Comsol Multiphysics; FFT;

    Sammanfattning : Transformers are essential for modern power distribution system. They are efficient and enable the voltages to be transformed up for transportation of electricity and back down for consumer use. The reliability of the transformer is affected by faults and fatigue of the copper. LÄS MER

  4. 3. Allowing more solar power connected to the grid, using thermal and ageing models of distribution transformers.

    Master-uppsats, Högskolan Dalarna/Institutionen för information och teknik

    Författare :Amena Khatun; [2021]
    Nyckelord :electric power distribution; solar power; renewable-electricity production; hosting capacity; distribution transformers; dynamic thermal rating; component ageing; component overloading.;

    Sammanfattning : Increasing amounts of solar power connected to the low-voltage network will adversely affect the performance of the network. The two impacts that will most often set the limit are overvoltage with the customers and overloading the distribution transformer. LÄS MER

  5. 4. Trådbromssystem : En fallstudie för implementering av bromssystem i en lindningsprocess

    Uppsats för yrkesexamina på grundnivå, Uppsala universitet/Industriell teknik

    Författare :Fredrik Östman; Philip Melin; [2021]
    Nyckelord :automation; brake; construction; control of brakes; control of processes; HVDC; powertransformer; wire winding; automatisering; bromssystem; lindning; HVDC; skivbroms; transformator; trumbroms;

    Sammanfattning : For an energy efficient current transmission, high demands are set on the construction of transformers. One of the more significant parts is the winding that constitutes the core of the transformer. LÄS MER

  7. 5. Omkonstruktion av bockverktyg : Från hydraulisk till elektrisk drivning

    Uppsats för yrkesexamina på grundnivå, Uppsala universitet/Industriell teknik

    Författare :Johannes Skarin; Anders Nygren; [2021]
    Nyckelord :actuator; battery; bending; cad; ctc; copper; finite-element; transformer; bockning; batteri; cad; ctc; finita-elementmetoden; koppar; ställdon; transformator;

    Sammanfattning : A hydraulic bending tool is used in the manufacturing of transformer windings at Hitachi ABB Power Grids. This tool is used to create a pitch between the turns in the winding, a process which demands very strict tolerances during bending. Hitachi/ABB believes that the current tool is quite inconvenient and, in some cases, dangerous to use. LÄS MER