Search for dissertations about: "power supply test"

Showing result 1 - 5 of 49 swedish dissertations containing the words power supply test.

  2. 1. Factor Demand and Market Power

    Author : Magnus Sjöström; Runar Brännlund; Patrik Söderholm; Umeå universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Economics; demand and supply; dynamic factor demand; adjustment costs; bootstrap; panel data; market power; Nationalekonomi; Economics; Nationalekonomi; nationalekonomi; Economics;

    Abstract : The objective of Paper [I] is to analyze potential effects on the Swedish forest sector of a continuing rise in the use of forest resources as fuel in energy generation. An increasing use of forest resources as an energy input may have effects outside the energy sector. READ MORE

  4. 2. Power System Oscillations - Detection, Estimation and Control

    Author : Morten Hemmingsson; Industriell elektroteknik och automation; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Elektroteknik; oscillation; power system; damping; power swing; distance protection; detection; estimation; real-time; reactive co-variation; control; Electrical engineering; load modulation; Automation; robotics; control engineering; Automatiska system; robotteknik; reglerteknik;

    Abstract : The topic of this thesis is the electro-mechanical oscillations which to some extent always are present in a power system. The demand of electric power is ever increasing. At the same time, the tolerance of disruptions in the power supply is decreasing. READ MORE

  5. 3. Cascaded Converters with Gate-Commutated Thyristors : Experimental Verification and Auxiliary Power Supply

    Author : Tomas Modeer; Hans-Peter Nee; Staffan Norrga; Dragan Jovcic; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : This thesis describes an effort to investigate the use of gate-commutated thyristors(GCTs) in cascaded converters. Cascaded converters, such as modularmultilevel converters (M2Cs) and cascaded H-bridge converters (CHBs), haveproved to be especially suitable in high-voltage, high-power applications. READ MORE

  6. 4. Testing and estimation in labour supply and duration models

    Author : Niklas Karlsson; Umeå University; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; labour supply; quantity constraint; perceived tax scale; duration; specification test; distribution;

    Abstract : Estimation and testing in labour supply and unemployment duration models are studied. In the first two papers estimation techniques designed to account for quantity constraints and perceived tax scales are developed, while the remaining three papers focus on specification tests. READ MORE

  7. 5. Planning Models for Single Wire Earth Return Power Distribution Networks

    Author : Geofrey Bakkabulindi; Lennart Söder; Mikael Amelin; Peiyuan Chen; KTH; []
    Keywords : Rural electrification; power distribution planning; Single Wire Earth Return; distribution power flow; power system modeling; SRA - Energy; SRA - Energi;

    Abstract : The high cost of grid extension to rural areas, often characterized by scattered communities with low load densities, requires the use of low cost electrification technologies to ensure economic viability. In Single Wire Earth Return (SWER) power distribution networks, the earth itself forms the current return path of the single phase system leading to significant cost savings on conductors, poles and poletop hardware compared to conventional systems. READ MORE