Sökning: "Power factor correction"

Visar resultat 6 - 10 av 20 uppsatser innehållade orden Power factor correction.

  1. 6. Development of Spectroscopic Measurements for Raman and Thomson Scattering Diagnostics ——Applications in Combustion and Plasma

    Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

    Författare :Miaoxin Gong; [2019]
    Nyckelord :Raman scattering; Raman spectroscopy; Thomson scattering; stray light suppression; periodic shadowing; high dynamic range imaging; digital micro-mirror device; DMD; laminar flames; combustion; gas discharge; plasma; laser diagnostics; spectrometer; improved spectroscopy; spectroscopy; Physics and Astronomy;

    Sammanfattning : This thesis work concerns methods for improved spectroscopy including stray-light suppression, dynamic range improvement and signal enhancement. These methods were applied in Raman and Thomson- scattering spectroscopy in combustion and plasma. LÄS MER

  3. 7. Modelling a Novel Linear Transverse Flux Machine and Designing a Hysteresis Current Controller for Power Factor Correction

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

    Författare :Ahmed Alhaidari; [2019]
    Nyckelord :double band hysteresis current controller; linear machine; magnetic circuit model; power take-off; transverse flux permanent magnet synchronous machine; wave energy conversion;

    Sammanfattning : In this thesis, the basics of electromagnetic theory for wave-energy conversion are reviewed, some of the characteristics of the ocean wave are investigated, some of the power take-off (PTO) systems are introduced, and details about linear permanent magnetic machines, in particular, are discussed.  The thesis aims to model the novel linear transverse flux machine designed by Anders Hagnestål and to build hysteresis current controller for power factor correc- tion. LÄS MER

  4. 8. Socio-Technical Analysis for the Off-Grid PV System at Mavuno Girls’ Secondary School in Tanzania

    Master-uppsats, Högskolan Dalarna/Energiteknik

    Författare :Karim Elbana; [2018]
    Nyckelord :Socio-technical; Off-grid; PV system; Women empowerment; Rural electrification; Load profile; Solar energy; Multi-disciplinary; Africa; Developing; countries; Tanzania; Electricity;

    Sammanfattning : The aim of this study is to investigate, analyse and evaluate the installed off-grid PV system in Mavuno girls’ secondary school that is located in a rural area in northwest Tanzania. The original motivation behind this study was the rapid degradation of the installed battery bank within less than 3 years. LÄS MER

  5. 9. Utvärdering av faskompenseringsmetoder för ett småskaligt vattenkraftverk : Genomgång av kondensatorbatteri, aktiv och passiv reglering, övermagnetiserad synkronmaskin, SVC och STATCOM på Fröslida kraftverk

    M1-uppsats, KTH/Hälsoinformatik och logistik

    Författare :Fuat Göker; Christoffer Hedberg; [2018]
    Nyckelord :Power factor correction; efficiency; active; passive; total harmonic distortion; budgeting; capacitor bank; synchronous machine; SVC; STATCOM.; Faskompensering; effektivisering; aktiv; passiv; distorsion; kalkyl; kondensatorbatteri; synkronmaskin; SVC; STATCOM.;

    Sammanfattning : Småskalig vattenkraft är en stor användare av reaktiv effekt då de ofta har asynkrongeneratorer. Det gör att det finns ett reellt behov för faskompensering, dels för att minska distorsion i nätet samt för att förbättra deras ekonomiska ställning, då elbolag ofta tar ut en avgift för överskridande användning av reaktiv effekt. LÄS MER

  7. 10. Tiling heuristics and evaluation metrics for treemaps with a target node aspect ratio

    Master-uppsats, KTH/Skolan för datavetenskap och kommunikation (CSC)

    Författare :Rodrigo Roa Rodríguez; [2017]
    Nyckelord :Treemap; heuristics; tiling; tessellation; metrics; aspect ratio; orientation agnostic; OAAR; FOAAR; orientation; offset factor; offset quotient; information visualization; infoviz; macro-economic metaphor; eat the poor; eat the rich; subsidy; welfare;

    Sammanfattning : Treemaps are a popular space-filling visualization of hierarchical data that maps an attribute of a datum, or a data aggregate, to a proportional amount of area. Assuming a rectangular treemap consisting of nested rectangles (also called tiles), there are multiple possible valid tiling arrangements. LÄS MER