Sökning: "symmetriska komponenter"

Visar resultat 1 - 5 av 10 uppsatser innehållade orden symmetriska komponenter.

  1. 1. Evaluation of Symmetrical Components Theory in Power Systems with Renewable Sources

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Daniil Danylov; [2021]
    Nyckelord :Symmetrical components theory; fault analysis; renewable sources; power electronics; PSCAD EMTDC; two bus system; inverter-based resources; line protection; nonlinear source.; Teori om symmetriska komponenter; felanalys; förnybara källor; kraftelektronik; PSCAD EMTDC; tvåbussystem; inverterbaserade resurser; linjeskydd; icke- linjär källa.;

    Sammanfattning : Rapidly growing Inverter- Based Resources (IBR) have different fault properties compared to Synchronous Generators (SG). Therefore, it is necessary to study the fault behavior of systems that contain different types of IBR and compare it to the conventional system responses in order to understand what steps should be taken to adapt conventional protection settings for new types of sources. LÄS MER

  3. 2. Real-time detection of stator resistance unbalances in three phase drives

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Bhanu Pratap Singh; [2020]
    Nyckelord :DC voltage injection; Fault detection; Field-Oriented Control; Induction machine; Inter-Turn Short Circuit; Short circuit; Sequence; Stator resistance unbalance; Symmetrical components; likspänningsinjektion; feldetektering; fält orienterad reglering; induktionsmaskin; InterTurn Short Circuit; kortslut; sekvenser; statormotstånd obalans; symmetriska komponenter;

    Sammanfattning : An estimated 30% of the faults in Induction Machine (IM) are related to its stator. These faults are mostly in the form of an Inter-Turn Short Circuit (ITSC) fault i.e., when two winding inside the stator of IM are shorted due to insulation failure. LÄS MER

  4. 3. Condition monitoring of induction machines using a signal injection technique

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Sathiya Lingam Senthil Kumar; [2020]
    Nyckelord :Condition monitoring; fault detection; fault diagnosis; stator winding fault; inter-turn fault.; Tillståndsövervakning; feldetektering; feldiagnos; statorlindningsfel; kortslutning mellan varv.;

    Sammanfattning : Condition monitoring techniques can be employed to enhance reliability of electric machinery. The stator winding fault is one of the dominant causes for the failure of induction machines. In this work, the condition monitoring of an inverter-fed induction machine using high-frequency signal injection based technique is investigated. LÄS MER

  5. 4. Trusted Execution Environments for Open vSwitch : A security enabler for the 5G mobile network

    Master-uppsats, KTH/Radio Systems Laboratory (RS Lab)

    Författare :Khalid Elbashir; [2017]
    Nyckelord :Open vSwitch; SDN; Trusted Execution Environment; SGX; Cloud Computing; Open vSwitch; SDN; mjukvarudefinierade nätverk; SGX; molntjänster;

    Sammanfattning : The advent of virtualization introduced the need for virtual switches to interconnect virtual machines deployed in a cloud infrastructure. With Software Defined Networking (SDN), a central controller can configure these virtual switches. Virtual switches execute on commodity operating systems. LÄS MER

  7. 5. Transient Stability During Asymmetrical Faults

    Uppsats för yrkesexamina på avancerad nivå, KTH/Elektroteknisk teori och konstruktion

    Författare :Nicolas Couturier; [2015]
    Nyckelord :;

    Sammanfattning : This research project has been conducted at RTE in order to study the transient stability after asymmetrical faults. When three-phase short-circuits occur in a network, almost all the electrical power is lost on the relevant line(s). Among all short-circuit types, it is the most drastic event and the issue has to be solved very quickly. LÄS MER