Search for dissertations about: "Georgios Stamatiou"

Found 4 swedish dissertations containing the words Georgios Stamatiou.

  2. 1. Analysis of VSC-based HVDC systems

    Author : Georgios Stamatiou; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HVDC; MMC; MTDC; Poor damping; Symbolic eigenvalue expressions; Droop control; Passivity Analysis; Net damping; Frequency Domain Analysis; VSC;

    Abstract : The main objective of this thesis is to perform stability and control studies in the area of VSC-HVDC systems. A major part of the investigation focuses on the development of procedures, whose aim is to understand, explain and avoid poorly-damped conditions or instability that may appear due to dc-side resonances, which stem from the interaction of converters and passive elements in such systems. READ MORE

  4. 2. Cochlear Ototoxicity : a temporal bone histopathology study

    Author : Georgios Stamatiou; UK London University College London Ear Institute Faculty of Brain Sciences; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Abstract : .... READ MORE

  5. 3. Contribution of Vestibular Evoked Myogenic Potentials (VEMP Test) to the Evaluation of Patients with Idiopathic Sudden Hearing Loss

    Author : Georgios Stamatiou; Greece Athens National & Kapodistrian University of Athens School of Medicine; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Abstract : Objective: To evaluate Vestibular Evoked Myogenic Potentials (VEMP) testing results in patients with unilateral Idiopathic Sudden Hearing Loss (ISHL) and to correlate them with the findings of caloric testing, the clinical appearance of vertigo, the influence of age, the grade and type of initial hearing loss and finally, the early recovery of subjects.Materials andMethods: One hundred and four (104) patients with unilateral ISHL and 35 healthy controls were subjected to a standard protocol of neurotological evaluation. READ MORE

  6. 4. Converter interactions in VSC-based HVDC systems

    Author : Georgios Stamatiou; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Symbolic eigenvalue expressions; Frequency Domain Analysis; Droop control; Net damping; VSC; Passivity Analysis; MTDC; Poor damping; HVDC;

    Abstract : The main objective of this thesis is to perform stability and control studies in the area of VSC-HVDC. A major part of the investigation focuses on the explanation of poorly-damped conditions and instability that are linked to dc-side resonances. READ MORE