Search for dissertations about: "voltage instability"
Showing result 21 - 25 of 39 swedish dissertations containing the words voltage instability.
-
21. On Stabilization of Sensorless Synchronous Motor Drives and Traction Converters
Abstract : Avhandlingen behandlar först och främst styrning av elmotordrifter, men vi tittar även på styrning av nätomriktare för stabil framdrivning av tåg.Två industriprojekt är rapporterade i avhandlingen, i form av delrapporterna ”Sensorless Control of Electrically Excited Synchronous Machines”, ABB Corporate Research och ”Stable and Passive Traction”, Bombardier Transportation. READ MORE
-
22. Physics of palladium metal-oxide-semiconductor devices
Abstract : This thesis Palladium gate metal-oxide-semiconductor (PdMOS) devices are used as hydrogen sensors. It is shown that the sensitivity is only partly due to the change of the effective work function of the Pd gate on hydrogen adsorption. Sodium ion drift experiments have shown that hydrogen-sodium interactions occur in PdMOS devices. READ MORE
-
23. Modelling of alkali-ion battery electrolytes
Abstract : Lithium-ion batteries are omnipresent in modern electronics. They can be found in laptops, mobile phones and electric vehicles. READ MORE
-
24. Ab initio modelling of alkali-ion battery electrolyte properties
Abstract : Lithium-ion batteries are omnipresent in modern electronics. They can be found in laptops, mobile phones and electric vehicles. READ MORE
-
25. Analysis of dc-network stability of VSC-based HVDC grids
Abstract : This thesis presents a modelling approach for the investigation of dc-network stability in HVDC grids. It consists on dividing the system under analysis into subsystems such that their individual impact on the stability of the overall system can be studied. READ MORE