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Visar resultat 1 - 5 av 60 avhandlingar som matchar ovanstående sökkriterier.
1. Control of Dynamically Assisted Phase-shifting Transformers
Sammanfattning : In this thesis, controllers for power oscillation damping, transient stability improvement and power flow control by means of a Controlled Series Compensator (CSC) and and a Dynamic Power Flow Controller (DPFC) are proposed. These devices belong to the group of power system components referred to as Flexible AC Transmission System (FACTS) devices. LÄS MER
2. Adaptive Programming of RFID Inlays in the Reactive Near Field
Sammanfattning : Radio frequency identification (RFID) offers a vast variety of options to improve the functionality and efficiency in the automated data collection (ADC) industry and Internet of Things (IoT). In the inventory process of RFID with passive data carriers, a population of battery less tags is located in the working range of an interrogator system. LÄS MER
3. Microwave CMOS Beamforming Transmitters
Sammanfattning : The increase of the consumer electronics market the last couple of decades has been one of the main drivers of IC process technology development. The majority of the ICs are used in digital applications, and for these CMOS is the choice of technology. The urge to squeeze more transistors on to a given area has led to shrinking feature sizes. LÄS MER
4. Integrating Latent Heat Storage into Residential Heating Systems : A study from material and component characterization to system analysis
Sammanfattning : Latent heat thermal energy storage (LHTES) systems can be coupled with heat pump (HP) systems to realize heat load shifting on demand side. With phase change material (PCM), well designed LHTES components exhibit high storage energy density and thus have large potentials to be integrated in residence where a compact energy storage solution is needed. LÄS MER
5. Gear Shifting with Retained Power Transfer
Sammanfattning : The most essential property of a powershifting transmission is that power can be transferred even during a gear shift. Automatic transmissions in vehicles are a common application. The gearbox is shifted by simultaneous engaging and disengaging of clutches, connected to a gear train. LÄS MER