Sökning: "Differential Energy analysis"

Visar resultat 6 - 10 av 38 uppsatser innehållade orden Differential Energy analysis.

1. 6. Analysis and Performance Evaluation of a Three-phase Three-level Sparse Neutral Point Clamped Converter for Industrial Variable Speed Drives

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

   Författare :Pengpeng Sun; [2022]
   Nyckelord :Sparse Neutral Point Clamped Converter; Industrial Variable Speed Drives; Silicon IGBT; Calorimetric Measurement; Reverse Recovery Energy; Sparse Neutral Point Clamped Converter; Industriella Varvtalsstyrda Motordrifter; Silicon IGBT; Kalorimetrisk Mätning; Energi för Återhämtningsprocess;

   Sammanfattning : This thesis project focuses on the simulation, design, hardware realization, and performance evaluation of a Three-phase Three-level (3-L) Sparse Neutral Point Clamped Converter (SNPCC) for Industrial Variable Speed Drives (VSDs). The basic operating principle of the SNPCC is briefly described based on switching functions. LÄS MER

3. 7. Turing's model for pattern formation

   Kandidat-uppsats, KTH/Fysik

   Författare :Oskar Forsström; Oskar Falgén Nikula; [2022]
   Nyckelord :Reaction-diffusion; Turing pattern; morphogen; Grier-Meinhardt; Schnakenberg; numerical analysis; minimum energy control;

   Sammanfattning : In an attempt to describe how patterns emerge in biological systems, Alan Turing proposed a mathematical model encapsulating the properties of such processes. It details a partial differential equation governing the dynamics of two or more substances, called morphogens, reacting and diffusing in a specific manner, in turn generating what has now come to be denoted as Turing patterns. LÄS MER

4. 8. Reglering av aerodynamiska element för lätta fordon

   Kandidat-uppsats, Högskolan i Halmstad/Akademin för informationsteknologi

   Författare :Jonathan Rendel; William Balte; [2022]
   Nyckelord :aktiv aerodynamik; reglerteknik; aktuator; reglersystem; nedåtkraft;

   Sammanfattning : Den här kandidatuppsatsen undersöker möjligheten att konstruera ett system som med hjälp av ett rörligt aerodynamiskt element reglerar den nedåtkraft ett fordon utsätts för vid olika störningar. För att manipulera det aerodynamiska elementet utvecklas en aktuator. LÄS MER

5. 9. Alkaline Protein Extraction of Oat Bran and Oat Endosperm Flour - the Effect of pH during Extraction and Precipitation

   Master-uppsats, Lunds universitet/Livsmedelsteknik och nutrition (master)

   Författare :Bella Nielsen; Alva Rodhe; [2021]
   Nyckelord :Oats; Protein; Alkaline extraction; Protein extraction; Plant-based proteins; Oat protein; Oat bran; Oat endosperm; Iso-electric precipitation; Food engineering; Technology and Engineering; Agriculture and Food Sciences;

   Sammanfattning : An increased understanding of the negative impacts of animal-based proteins, on both environment and health, has led to a rise in the demand for plant-based proteins. To meet the demands, conventional crops must be efficiently utilized. LÄS MER

7. 10. Homogenization of an elliptic transmission system modeling the flux of oxygen from blood vessels to tissues

   Master-uppsats,

   Författare :Filippo Di Tillio; [2021]
   Nyckelord :;

   Sammanfattning : Motivated by the study of the hypoxia problem in cancerous tissues, we propose a system of coupled partial differential equations defined on a heterogeneous, periodically perforated  domain describing the flux of oxygen from blood vessels towards the tissue and the corresponding oxygen diffusion within the tissue. Using heuristics based on dimensional analysis, we rephrase the initially parabolic problem as a semi-linear elliptic transmission problem. LÄS MER