Sökning: "IED"

Visar resultat 1 - 5 av 12 avhandlingar innehållade ordet IED.

  1. 1. Protection for Multiterminal HVDC Grids - A Digital Contribution

    Författare :Ilka Jahn; Staffan Norrga; Hans-Peter Nee; Dirk Westermann; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HVDC transmission; power system protection; IED; real-time systems; test bench; field programmable gate array; open-source hardware; open-source software; power engineering education; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : The aim of this thesis is to (1) enhance understanding of mechanisms that are important for the protection of high-voltage direct-current (HVDC) grids, and (2) suggest possible technical solutions. To that end, digital technologies were used both in simulation, as well as in a laboratory environment. LÄS MER

  3. 2. Genetics, epigenetics and functional mechanisms in inherited corneal and retinal dystrophies

    Författare :Ida Maria Westin; Irina Golovleva; Berit Byström; Marie Burstedt; Ola Sandgren; Sudha Iyengar; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Genetics; Epigenetics; Splicing; Methylation; Ophtalmology; FECD; Stargardt; Retinitis pigmentosa; ABCA4; EYS; TCF4; F5; THBD; Coagulation factor V; Thrombomodulin; medicinsk genetik; Medical Genetics;

    Sammanfattning : Inherited eye disorders (IED) are groups of genetically and clinically heterogenous conditions affecting different tissues in the eye. IED are most often progressive with reduced vision or legal blindness as outcome. LÄS MER

  4. 3. Increasing the hosting capacity of distributed energy resources using storage and communication

    Författare :Nicholas Etherden; Sami Repo; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Renewable Energy Generation; Energy Storage; Hosting Capacity; Curtailment; Demand Response; Dynamic Line Rating; Power System Communication; Smart Grid; Förnyelsebara energikällor; Energilagring; Acceptansgräns; Kommunikation i kraftsystem; Smarta elnät; Energy Engineering; Energiteknik; Electric Power Engineering; Elkraftteknik;

    Sammanfattning : The use of electricity from Distributed Energy Resources like wind and solar powerwill impact the performance of the electricity network and this sets a limit to theamount of such renewables that can be connected. Investment in energy storage andcommunication technologies enables more renewables by operating the networkcloser to its limits. LÄS MER

  5. 4. Attosecond photoelectron interferometry: from wavepackets to density matrices

    Författare :Hugo Laurell; Atomfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Quantum state tomography; Decoherence; Photoionization; Fysicumarkivet A:2023:Laurell;

    Sammanfattning : Through the advent of high-order harmonic generation and attosecond light pulses, photoionization dynamics has been studied on the attosecond time-scale, the intrinsic time-scale of such dynamics. When the electron leaves the atomic potential a phase shift is imprinted on the electron wavefunction. LÄS MER

  7. 5. Auditory Brainstem Response (ABR) and Cambridge Neuropsychological Test Automated Battery (CANTAB) as Objective Support in Diagnosing Childhood ADHD and ASD

    Författare :Emma Claesdotter; Barn- och ungdomspsykiatri; []
    Nyckelord :ADHD ASD ABR CANTAB;

    Sammanfattning : AbstractBackgroundThere is a need for easily administered objective tests in neurodevelopmental disorders. We investigated the clinical utility for child and adolescent psychiatry of Auditory Brainstem Response (ABR) and Cambridge Neuropsychological Test Automated Battery (CANTAB) as support in diagnosing attention deficit hyperactivity disorder (ADHD) and autism spectrum disorder (ASD). LÄS MER