Search for dissertations about: "math and technology"
Showing result 1 - 5 of 27 swedish dissertations containing the words math and technology.
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1. Stability of Low-Frequency AC Railways : Models and Transient Stability
Abstract : Low-frequency AC railway grids are unique in the sense that a only few countries around the world uses them, still however, they are an important parts of their countries infrastructures. Due to the usage of a dierent frequency than the public grid of the country, conversion of frequency is needed for the interconnection. READ MORE
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2. Power quality analysis and techno-economic modeling for microgrids
Abstract : The work done in this thesis considers microgrids from two different aspects. Power quality and techno-economics of microgrids. Detailed power quality measurements have been made at a single house hydrogen-solar microgrid that consists of state-of-the-art energy efficiency technology, energy production and energy storage. READ MORE
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3. On the supraharmonics in single-phase and three-phase installations
Abstract : Society has increasingly started depending on the continuity of internet services, the interruption can be crucial for vital societal functions. It is therefore important to maintain continuous and reliable operations of e.g., installations housing sensitive IT (Information Technology) loads. READ MORE
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4. Artificial Intelligence-Based Characterization and Classification Methods for Power Quality Data Analytics
Abstract : One of the important developments in the electric power system is the fast increasing amount of data. An example of such data is formed by the voltages and currents coming from power-quality measurements. READ MORE
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5. Managing uncertainties through efficient calculation of transients and harmonic propagation in power systems
Abstract : The electric power system is undergoing changes including large-scale introduction of renewable energy sources together with HVDC/FACTS, changes in the network such as increased amount of high voltage cables, industrial electrification, and changes in the load composition. These changes will impact the system in different ways and lead to challenges that must be addressed to facilitate planning, dimensioning, and operation of the system in a secure and economical way. READ MORE