Essays about: "felanalys"

Showing result 6 - 10 of 14 essays containing the word felanalys.

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

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Daniil Danylov; [2021]
    Keywords : 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.;

    Abstract : 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. READ MORE

  3. 7. Development of a method for estimation of contact fatigue life in hypoid gears

    University essay from KTH/Maskinkonstruktion (Inst.)

    Author : Srigiripura Sahana Vittal; [2020]
    Keywords : Hypoid Gear; Rolling Contact fatigue; Fatigue life; FEM; Gear Contact life; Spalling; physical testing; fatigue analysis; Hypoidväxel; rullande kontaktutmattning; utmattningslivslängd; FEM; växelkontaktlivslängd; spalling; fysisk testning; utmattningsanalys;

    Abstract : Hypoid gears have been used extensively in automobiles, aerospace, marine and other applications for decades. The special advantages of hypoid gears come with inherent contact complexities of varying curvature and sliding in both profile and lengthwise direction. READ MORE

  4. 8. Study of an Isolated and a Non-Isolated Modular DC/DC Converter : In Multi-Terminal HVDC/MVDC grid systems

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Ranjithh Raj Ram Prakash; [2019]
    Keywords : High power high voltage DC-DC converter; Isolated non-isolated DC-DC converter; HVDC MVDC interconnection; HVDC HVDC point-to-point link; Modular multilevel converter; Transformer driven MMC; Steady state transient DC fault analysis; High Power DC DC-omvandlare med hög spänning; Isolerad och icke-isolerad DC-DC-omvandlare; HVDC MVDC-anslutning; HVDC HVDC-punkt-till-punkt-länk; Modulär multilevelomvandlare; Transformatorstyrd MMC; Stabilitet DC felanalys;

    Abstract : För sammankoppling av multi-terminala HVDC-system med punkt-till-punkt kopplingar ärDC-DC-omvandlaren den enda möjliga sammankopplingen. Därför genomgår problemenmed spänningsmatchning och likspänningsströmbegränsning i högspännings DC-systemomfattande forskning samt ligger i fokus för denna avhandling. READ MORE

  5. 9. Inter- and intralingual errors in Chinese students' compositions : A case study

    University essay from Karlstads universitet/Institutionen för språk, litteratur och interkultur (from 2013)

    Author : David Björkegren; [2018]
    Keywords : Second language acquisition; interlingual errors; intralingual errors; Chinese learners of English; Error Analysis; Andraspråksinlärning; förstaspråksinterferens; målspråksinterferens; kinesiska studenters engelska; felanalys;

    Abstract : In this quantitative study, time controlled written English compositions by 39 Chinese university majors of English were analyzed by means of Error Analysis (EA) in order to find out what grammatical errors were made. It investigates errors made by more than one fifth of the participants, in order to see whether they can be ascribed to either interlingual or intralingual influence. READ MORE

  6. 10. Preposition and article usage in learner English : An investigation of negative transfer

    University essay from Karlstads universitet/Institutionen för språk, litteratur och interkultur

    Author : Håkan Almerfors; [2018]
    Keywords : Error Analysis; article usage; preposition usage; negative transfer; corpus study; Swedish learners of English; Portuguese learners of English; felanalys; artikelanvändning; prepositionsanvändning; negativ språköverföring; korpusundersökning; svenska elever som studerar engelska; portugisiska elever som studerarar engelska;

    Abstract : The ways in which someone’s first language (L1) influences his or her second language (L2) to create errors, that is negative transfer, is a topic that has received much attention in the field of Second Language Acquisition (SLA). Previous research has suggested that negative transfer is responsible for many errors. READ MORE