Sökning: "Joacim Törnqvist"

Hittade 3 uppsatser innehållade orden Joacim Törnqvist.

  1. 1. Ändhållplatsladdning av elbussar : En fallstudie av två stadsbusslinjer i Uppsala

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Byggteknik

    Författare :Joacim Törnqvist; [2019]
    Nyckelord :Elbussar; snabbladdning; pantograf; Vinnova; Spetskraft 2020;

    Sammanfattning : This thesis investigates the charging power and battery capacity needed for fast charging of fully electrical busses at end stations in Uppsala, Sweden. The operator, UL, wants to implement electrical busses by 2020 and a new depot for the city buses is being built with possibility to slow-charge the busses overnight. LÄS MER

  3. 2. Hosting Capacity of a Low-Voltage Grid : Development of a Simplified Model to be used in future Solar Roadmaps

    Kandidat-uppsats, Uppsala universitet/Institutionen för teknikvetenskaper

    Författare :Jonas Andersson; Vendela Bernström; Joacim Törnqvist; [2017]
    Nyckelord :solar roadmap; hosting capacity; PV power; PV system; overvoltage; low-voltage grid; self-consumption;

    Sammanfattning : The purpose of this bachelor thesis is to assess whether it is possible to create a simplified model that estimates the hosting capacity of a low-voltage grid. The Simplified model is compared with a more elaborate model created by the Built Environment Energy Systems Group (BEESG) at Uppsala University. LÄS MER

  4. 3. Non-contact High Voltage Measurements: Modeling and On-site Evaluation

    Master-uppsats, Institutionen för fysik

    Författare :Joacim Törnqvist; [2012]
    Nyckelord :Capacitive; Measurement technique; Modeling; Optimization; Non-contact; Voltage measurement; Low cost; transient detection; Kapacitiv; Mätteknik; Modellering; Optimering; Beröringsfri; Spänningsmätning; Låg kostnad; Transientövervakning;

    Sammanfattning : In the high voltage grid, voltage measurements are made in dedicated voltage-transformers. These devices are expensive and insulation failures could impact directly on the system, and even cause a power outage. LÄS MER