Sökning: "Load dump"

Visar resultat 11 - 15 av 15 uppsatser innehållade orden Load dump.

  1. 11. Avbördning via turbinerna : En fallstudie av ett litet vattenkraftverk och ett högt flöde

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Elektricitetslära

    Författare :Mikael Gidstedt; [2015]
    Nyckelord :Hydropower; dam safety; discharge capacity; dump load; Vattenkraft; dammsäkerhet; avbördning; dumplast;

    Sammanfattning : In 1990 Flödeskommittén released new guidelines which redefined the method used to determine design flows. The method, combined with more complete measurements of flow variations, has resulted in higher design flows which in turn call for increases in the discharge capacity of hydropower plants. This work is still in progress. LÄS MER

  3. 12. Design of a small scale hybrid photovoltaic and wind energy system

    Kandidat-uppsats,

    Författare :Matilda Kjellander; Anders Tengvall; [2014]
    Nyckelord :Hybrid-system; wind; solar; AC-coupling; DC-coupling; power system;

    Sammanfattning : Approaching problems with global warming due to the use of fossil fuels, means that new system solutions have to be investigated. This report investigates the possibility to expand an existing photovoltaic system with a wind turbine generator to simplify the expansion of renewable energy sources. LÄS MER

  4. 13. MODELING AND SIMULATION OF A HYBRID WIND-DIESEL MICROGRID

    Master-uppsats, KTH/Elektriska energisystem

    Författare :Vincent Friedel; [2009]
    Nyckelord :Power Systems; Hybrid microgrid; Wind-Diesel system; PSCAD modeling;

    Sammanfattning : Some communities in remote locations with high wind velocities and an unreliable utility supply, will typically install small diesel powered generators and wind generators to form a microgrid. Over the past few years, microgrid projects have been developed in many parts of the world, and commercial solutions have started to appear. LÄS MER

  5. 14. PSQS – Power Supply Quality Simulator

    Kandidat-uppsats,

    Författare :Johan Ahlström; Edward Nordström; [2008]
    Nyckelord :EMC; Fordonselektronik; Testpulser; Microcuts; Cranking; Load dump;

    Sammanfattning : Kitron had wishes to be able to test and measure how disturbance affects their vehicle electronic units before they have been verified by SP Technical Research Institute of Sweden in Borås. This work started with the writing of a demand specification together with Kitron for a product PSQS, Power Supply Quality Simulator, which can generate some test pulses according to a standard for electronic units to Volvos vehicles. LÄS MER

  7. 15. Dynamisk modellering av kärnreaktor

    Uppsats för yrkesexamina på avancerad nivå, Institutionen för fysik och astronomi

    Författare :Karin Gillgren; [2007]
    Nyckelord :;

    Sammanfattning : The purpose of this thesis has been to develop a tool for modelling and simulating the nuclear plant Ringhals 3. The model should be used to improve the knowledge on the dynamics of the plant. Ringhals 3 is being upgraded to produce more power and a tool for analyzing the new operating conditions is needed. LÄS MER