Sökning: "Electric power systems"

Visar resultat 1 - 5 av 311 avhandlingar innehållade orden Electric power systems.

  1. 1. Process Control and Simulation of Ferromagnetic Strip in the Power Transformers and Electrical Machines Applications Electric power systems

    Detta är en avhandling från Västerås, Sweden : Mälardalen University

    Författare :Kourosh Mousavi Takami; Mälardalens högskola.; [2009]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strip; electrical machines; transformer; cold rolling mills; process; automation; control; Band; elektriska maskiner; transformatorer; kallvalsningsverk; processautomation; reglerteknik; TECHNOLOGY Electrical engineering; electronics and photonics Electric power engineering; TEKNIKVETENSKAP Elektroteknik; elektronik och fotonik Elkraftteknik; Energy- and Environmental Engineering; energi- och miljöteknik;

    Sammanfattning : This thesis investigates optimization of the control of electrical and thermal equipment by using FEM and CFD modeling in combination with dynamic simulation models. The thesis focuses on the production of electrical strips and the control system with the aim of reducing losses and improving magnetic properties. LÄS MER

  2. 2. Power-generation, Power-electronics and Power-systems issues of Power Converters for Photovoltaic Applications

    Detta är en avhandling från Chalmers University of Technology

    Författare :Björn Lindgren; Chalmers tekniska högskola.; Chalmers University of Technology.; [2002]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Elektroteknik; elektronik och fotonik; Electrical engineering; electronics and photonics; bang-bang control; current control; embedded generation; photovoltaic; power quality; power systems; shading tolerance; solar power generation;

    Sammanfattning : The thesis deals with issues related to solar energy systems, or more specifically, the electric systems of photovoltaic (PV) installations. Initially aspects of planning and estimating the performance of a PV-installation are considered. LÄS MER

  3. 3. Generation Reliability for Isolated Power Systems with Solar, Wind and Hydro Generation

    Detta är en avhandling från Chalmers University of Technology

    Författare :Jimmy Ehnberg; Chalmers tekniska högskola.; Chalmers University of Technology.; [2003]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Elektroteknik; elektronik och fotonik; Electrical engineering; electronics and photonics; Renewable energy; Stochastic modelling; Generation reliability; Isolated power systems; Solar power; Wind power;

    Sammanfattning : This licentiate thesis deals with reliability issues for small isolated power systems. The focus is on power systems in remote areas based entirely on renewable energy sources. The sources investigated in this thesis are mainly solar and wind power; stochastic models for these energy sources are presented. LÄS MER

  4. 4. On Frequency Control Schemes in Power Systems with Large Amounts of Wind Power

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Camille Hamon; KTH.; [2012]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wind power; Stochastic optimal power flows; Frequency control schemes; Tertiary frequency control; uncertainty; power systems;

    Sammanfattning : In recent years, large investments have been made in wind power, and this trend is expected to continue in the coming decades. Integrating more wind power in the production mix offers great opportunities for the society, such as reducing greenhouse gas emissions and the dependence on foreign fuel. LÄS MER

  5. 5. On harmonic distortion in power systems

    Detta är en avhandling från Chalmers University of Technology

    Författare :Johan Lundquist; Chalmers tekniska högskola.; Chalmers University of Technology.; [2001]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; power quality; harmonic distortion; power sustem monitoring; rectifiers; drives; converters; voltage notching; active power; losses; harmonic propagation; resonance; harmonic filter; unbalance;

    Sammanfattning : .... LÄS MER