Search for dissertations about: "active power generator"
Showing result 1 - 5 of 29 swedish dissertations containing the words active power generator.
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1. Power System Damping - Structural Aspects of Controlling Active Power
Abstract : Environmental and economical aspects make it difficult to build new power lines and to reinforce existing ones. The continued growth in demand for electric power must therefore to a great extent be met by increased loading of available lines. READ MORE
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2. Grid Connection of Permanent Magnet Generator Based Renewable Energy Systems
Abstract : Renewable energy is harnessed from continuously replenishing natural processes. Some commonly known are sunlight, water, wind, tides, geothermal heat and various forms of biomass. The focus on renewable energy has over the past few decades intensified greatly. READ MORE
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3. Long-term Voltage Stability in Power Systems - Alleviating the Impact of Generator Current Limiters
Abstract : The main issues in this dissertation are the behaviour of current limiters protecting synchronous generators, and the interactions that occur with other components in the power system during a voltage instability. The importance of these limiters for the voltage stability is shown both in the analysis of small models and in the simulations of larger networks. READ MORE
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4. Subsynchronous Resonance in Doubly Fed Induction Generator based Wind farms
Abstract : The objective of this thesis is to investigate the risk for instabilities due to subsynchronous resonance (SSR) conditions in large wind farms connected to series-compensated transmission lines. In particular, the focus is on doubly-fed induction generator (DFIG) based wind farms. READ MORE
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5. Multilevel Power Converters with Smart Control for Wave Energy Conversion
Abstract : The main focus of this thesis is on the power electronic converter system challenges associated with the grid integration of variable-renewable-energy (VRE) sources like wave, marine current, tidal, wind, solar etc. Wave energy conversion with grid integration is used as the key reference, considering its high energy potential to support the future clean energy requirements and due the availability of a test facility at Uppsala University. READ MORE