Sökning: "power reduction"

Visar resultat 1 - 5 av 672 avhandlingar innehållade orden power reduction.

  1. 1. Vulnerability and Power : Social Justice Organizing in Rockaway, New York City, after Hurricane Sandy

    Författare :Sara Bondesson; Daniel Nohrstedt; Elin Bjarnegård; Annica Kronsell; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Social vulnerability; Disaster risk reduction; Social movements; Power; Empowerment; Hurricane Sandy; Rockaway; Statskunskap; Political Science; Statsvetenskap med inriktning mot krishantering och internationell samverkan;

    Sammanfattning : This is a study about disasters, vulnerability and power. With regards to social justice organizing a particular research problem guides the work, specifically that emancipatory projects are often initiated and steered by privileged actors who do not belong to the marginalized communities they wish to strengthen, yet the work is based on the belief that empowerment requires self-organizing from within. LÄS MER

  3. 2. Efficient Simulation Methods of Large Power Systems with High Penetration of Renewable Energy Resources : Theory and Applications

    Författare :Ebrahim Shayesteh; Lennart Söder; Enrique Acha; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Power system simplification; power system reduction; power system aggregation; power system equivalencing; renewable energy resources; wind power modelling; storage allocation problem; spinning reserve determination; multi-area power system analyses; power system operation and planning; electricity market analysis.; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Electrical energy is one of the most common forms of energy these days. Consequently, electric power system is an indispensable part of any society. LÄS MER

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

    Författare :Kourosh Mousavi Takami; Jafar Mahmoudi; Örjan Danielsson; Mihai Nicolescu; Mälardalens högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strip; electrical machines; transformer; cold rolling mills; process; automation; control; Band; elektriska maskiner; transformatorer; kallvalsningsverk; processautomation; reglerteknik; Electric power engineering; 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

  5. 4. Peak and Power Reduction in Multicarrier Communication Systems

    Författare :Niklas Andgart; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Telekommunikationsteknik; line driver; Signal processing; Signalbehandling; Telecommunication engineering; power reduction; DSL; DMT; tone reservation; PAR; Peak to average ratio;

    Sammanfattning : Broadband multicarrier communication suffers from a large signal span, causing problems in both wireless and wireline systems. This is commonly referred to as a high peak to average ratio (PAR), and leads to a high power consumption, which is an important limitation in many communication systems. LÄS MER

  7. 5. Wind power in thermal power systems

    Författare :Lisa Göransson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; integration; wind power; variation moderator; PHEV; storage;

    Sammanfattning : AbstractWind power is a key technology in the effort to transform the power system in order to reduce its climate impact. However, the ability of wind power to reduce CO2-emissions depends on the properties of the power system. LÄS MER