Sökning: "Reactance"

Visar resultat 1 - 5 av 35 uppsatser innehållade ordet Reactance.

  1. 1. A numerical comparison of the thermoacoustics for different equivalence ratios for n-dodecane using LES

    Master-uppsats, Lunds universitet/Institutionen för energivetenskaper

    Författare :Björn Jarfors; [2023]
    Nyckelord :Computational Fluid Dynamics; Bluff-body stabilised flames; Large Eddy Simulation; Thermoacoustics; Acoustics; NEUMANN Project; Jet engines; Aero engines; Airplanes; Combustion; Numerics; Technology and Engineering;

    Sammanfattning : Klimatförändringarna påverkar vår värld och det behövs ett mer hållbart samhälle. Flygindustrin är i behov av förändring, men flygmotorer är mycket komplexa och tar tid att utveckla. Termoakustiska instabiliteter har kraften att förstöra en motor, men också att minska miljöpåverkan. LÄS MER

  3. 2. ETT NÖDVÄNDIGT ONT

    Kandidat-uppsats, Göteborgs universitet/Institutionen för journalistik, medier och kommunikation

    Författare :John Andersson; Arvid Holmqvist; [2022-08-01]
    Nyckelord :Native annonser; native ads; Facebook; medvetenhet; attityder; Persuasion Knowledge Model; gestaltlagar; Reactance theory;

    Sammanfattning : Every day we are exposed to a large amount of advertisements. As social media has become an important part of many people's lives, advertising on these platforms has also become important for advertisers and major sources of income for the companies behind the social media. LÄS MER

  4. 3. Mitigating SSCI in a hybrid wind and PV farm utilizing PV-STATCOM : A Swedish case study

    Master-uppsats, Högskolan Dalarna/Institutionen för information och teknik

    Författare :Isabelle Löfgren; [2022]
    Nyckelord :impedance analysis; PV-STATCOM; SSCI; SSO; SSR; sub-synchronous control interaction;

    Sammanfattning : The share of electricity generation in the power system being based on power electronics is increasing, which will impact the system in different ways, such as an increased risk for undesired interactions. An example is doubly fed induction generator (DFIG) based windfarms which have been shown to present negative resistance in (parts of) the sub-synchronous range (i. LÄS MER

  5. 4. Femvertising: Dagens fluga eller tidlös fullträff?

    Kandidat-uppsats, Lunds universitet/Företagsekonomiska institutionen

    Författare :Sara Eriksson; Elvira Hammarström; Ebba Otterstedt; [2022]
    Nyckelord :Femvertising; reklamattityder; motreaktion; stereotyper; kvinnlig egenmakt; replikationsstudie; ålder; Business and Economics;

    Sammanfattning : The purpose of this study is to investigate how femvertising, in specific advertising which aims to encourage female empowerment, is perceived by two generations of women and if it affects their attitudes toward an ad. The study is a replication of the previous study Advertising “like a girl”: Toward a better understanding of “femvertising” and its effects presented by Åkestam, Rosengren and Dahlén (2017). LÄS MER

  7. 5. Power Electronic Enhanced Distribution Transformer : Seamless Voltage Regulation with Extended Functionalities

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

    Författare :Nils Johansson; [2022]
    Nyckelord :Hybrid distribution transformer; Power converters; Voltage control; Hybrid power system; Reactive power; Hybrid distrubitionstransformator; Effektomvandlare; Spänningskontroll; Hybrida elnät; Reaktiv effekt;

    Sammanfattning : On-load tap changers and static synchronous compensators (STATCOM) are the main components for voltage regulation and power quality optimization in the power system. STATCOMs are used in both industrial applications and utility to stabilize the grid and reduce downtime. LÄS MER