Sökning: "weak ac systems"
Visar resultat 1 - 5 av 6 uppsatser innehållade orden weak ac systems.
1. DC-DC Converter for Fast Charging with Mobile BESS in a Weak Grid : Enabling remote charging and increased efficiency with less resource intensity
Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)Sammanfattning : With the increase of electric vehicles (EVs) on the roads the availability of charging infrastructure becomes more important. Today it is relatively straightforward to install fast chargers in areas with strong power grid connections, such as in urban areas. LÄS MER
2. Towards a Cooper pair splitter in InAs nanowires with crystal-phase defined quantum dots
Master-uppsats, Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Lunds Tekniska HögskolaSammanfattning : Cooper pair splitting (CPS) is a process in which the two spin-entangled electrons of a Cooper pair in a superconductor are split into two spatially separated electrons. If the separated electrons are still entangled, CPS can be studied to increase the knowledge of non-locality in quantum systems. LÄS MER
3. Control Strategies for VSC-HVDC links in Weak AC Systems
Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen för systemteknikSammanfattning : In this master thesis control systems for a voltage-source converter HVDC connected to weak ac networks are investigated. HVDC stands for high voltage direct current and is a way to transfer power in the electrical power system. LÄS MER
4. Optimal Power Flow for an HVDC Feeder Solution for AC Railways
Uppsats för yrkesexamina på avancerad nivå, KTH/Elektrisk energiomvandlingSammanfattning : With today’s increasing railway traffic, the demand for electrical power has increased. However, several railway systems are weak and are not being controlled optimally. Thus, transmission losses are high and the voltage can be significantly lower than the nominal level. LÄS MER
5. To return or not return - Trend spotting in the Swedish market
Kandidat-uppsats, Lunds universitet/Nationalekonomiska institutionenSammanfattning : The following essays checks whether the Swedish stock market (represented by OMXS30) supports the weak efficiency of the EMH by observing whether the stocks contain a unit root and whether one can use trading strategies to create abnormal profits. The AR(1) model of the stock prices have a unit root coefficient very close to 1, thus they are trend stationary but have a very long memory. LÄS MER