Search for dissertations about: "electrical energy"
Showing result 16 - 20 of 1608 swedish dissertations containing the words electrical energy.
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16. System Perspectives on Hydro-Kinetic Energy Conversion
Abstract : Free-flowing water currents such as tides and unregulated water courses could contribute to world electricity production given the emergence of robust technical solutions for extracting the energy. At Uppsala University, a concept for converting the energy in water currents to electricity using a vertical axis turbine with fixed blade-pitch and a direct-drive permanent magnet generator is studied. READ MORE
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17. Optimization modeling of frequency reserves and inertia in the transition to a climate-neutral electricity system
Abstract : The ongoing transition towards electricity production systems that are dominated by wind and solar power challenge both the traditional strategy for meeting a varying electricity demand and the traditional way of controlling the AC frequency of the electricity grid. This work investigates how frequency reserves (FR) and inertia, as well as inter-hourly variation management interact in the transition to a climate-neutral electricity system. READ MORE
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18. Energy Storage Systems in Electrical Distribution Grids : Analysis and implementations of use cases for service stacking
Abstract : This Ph.D. thesis investigates the possibility of using energy storage systems for multiple services by implementing service stacking, with special emphasis on congestion management in distribution grids. READ MORE
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19. Energy consumption transition : final household energy consumption in the case of Sweden 1920-2010
Abstract : This licentiate thesis examines households’ final energy consumption over the long run by measuring their final energy use and examining how structural, institutional and economic factors affected the demand for energy in the residential sector during the period 1920-2010, a period covering the transition from traditional to fossil to renewable energy carriers. I believe that wider understanding of the historical energy transition and energy consumption within the residential sector might help us gain important insights into the long-run development and the factors affecting energy consumption among the households. READ MORE
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20. Experimental results from the Lysekil Wave Power Research Site
Abstract : This thesis presents how experimental results, from wave power research performed offshore at the Lysekil research site, were obtained. The data were used to verify theoretical models as well as evaluate the feasibility of wave power as a future sustainable energy source. READ MORE