Sökning: "vector current control"

Visar resultat 26 - 30 av 45 avhandlingar innehållade orden vector current control.

  1. 26. Control of Static Series Compensator for Mitigation of Power Quality Problems

    Författare :Hilmy Awad; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Power Electronics and Advanced Control technologies have made it possible to mitigate the power quality problems and maintain the operation of sensitive loads. Among power system disturbances, voltage dips, swells, and harmonics are some of the severe problems to the critical industrial loads. LÄS MER

  3. 27. Exploration of bacteria associated with Anopheles mosquitoes around the world : For the prevention of transmission of malaria

    Författare :Louise K. J. Nilsson; Olle Terenius; Staffan Svärd; Sebastian Håkansson; Michael Strand; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; microbiota; microbiome; vector-borne disease; 16S rRNA gene; amplicon sequencing; Biologi med inriktning mot mikrobiologi; Biology with specialization in Microbiology;

    Sammanfattning : Every year, hundreds of thousands of people die from malaria. Malaria is a disease caused by parasites, which are spread by female vector mosquitoes of the genus Anopheles. Current control measures against malaria are based on drugs against the parasites and vector control using insecticides. LÄS MER

  4. 28. Modulation, efficiency and lifetime of two-level and multilevel converters for a hydropower application

    Författare :Chengjun Tang; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Pumped-storage hydropower; pulse width modulation; losses; modular multilevel converter; efficiency; variable speed; converter; lifetime; space vector modulation; thermal modelling; neutral point clamped converter;

    Sammanfattning : Along with the integration of the renewable energy in the electrical grid, the pumped-storage hydropower has gained more and more attention due to its fast response and energy storage ability. To have a higher overall efficiency and more flexibility of the system, variable speed is preferred in the operation of the pumped-storage hydropower applications. LÄS MER

  5. 29. Medium Voltage Generation System with Five-level NPC Converters for Kite Tidal Power

    Författare :Georgios Mademlis; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Voltage balancing; Maximum Power Point Tracking MPPT ; Medium Voltage Converters; Multilevel Space-Vector-Modulation; Neutral point clamped converter NPC ; Subsea kite; Tidal power;

    Sammanfattning : Offshore power generation has emerged as a prominent source of energy and the installed capacity of new plants has been steadily increasing in recent years. Tidal power specifically is a promising renewable energy source which has not been highly exploited yet, despite its distinctive advantages of being predictable and independent of weather conditions. LÄS MER

  7. 30. Restructuring the socially anxious brain : Using magnetic resonance imaging to advance our understanding of effective cognitive behaviour therapy for social anxiety disorder

    Författare :Kristoffer N. T. Månsson; Gerhard Andersson; Tomas Furmark; Per Carlbring; C-J Boraxbekk; Philippe Goldin; Linköpings universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Social anxiety disorder SAD ; Cognitive behaviour therapy CBT ; Amygdala; Multimodal neuroimaging; Support vector machine learning SVM ; Social ångest; Kognitiv beteendeterapi; Hjärnavbildning; Amygdala; Magnetresonanstomografi;

    Sammanfattning : Social anxiety disorder (SAD) is a common psychiatric disorder associated with considerable suffering. Cognitive behaviour therapy (CBT) has been shown to be effective but a significant proportion does not respond or relapses, stressing the need of augmenting treatment. LÄS MER