Essays about: "mekaniska förluster"

Showing result 1 - 5 of 14 essays containing the words mekaniska förluster.

1. 1. Review and Design of DC Electrical Field Measurement Systems and Related Developments : For Measurements Around HVDC Cable Terminations

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

   Author : Emil Bergvall; [2023]
   Keywords : DC Field Probe; Measurement Systems; Electric Fields; Cable Termination; Ion Drift; Conductivity; HVDC; Field Mill; Field Simulations; Positioning System; MEMS; Electro-Optics; DC Fält Prob; Mätsystem; Elektriska Fält; Kabelavslut; Jondrift; Ledningsförmåga; HVDC; Fältkvarn; Fält Simulationer; Positioneringsystem; MEMS; Elektro-Optik;

   Abstract : With power generation and consumption placed further away from each other, with for example increased offshore power production, the need for HVDC transmission systems increases. As voltage levels in the HVDC transmission system are raised, the losses can be decreased, enabling efficient power transfer over longer distances. READ MORE

3. 2. Studie av toppskyddet EcoTall på ett ungskogsbestånd i Västmanland

   University essay from SLU/School for Forest Management

   Author : Lisa Wästling; [2023]
   Keywords : betesskador; viltskydd; älg;

   Abstract : Viltskador är problematiska för skogsbruket då det medför defekter som orsakar stora ekonomiska förluster. Det är framförallt älgens betesskador på tall som är ett problem för skogsbrukets ekonomi och skadorna förväntas inte bli färre med tiden. READ MORE

4. 3. Dual-polarized geodesic lens in sub-THz

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

   Author : Wenfu Fu; [2022]
   Keywords : beam scanning; dual polarization; fully metallic; geodesic lens; Luneburg lens antenna; THz; strålskanning; korspolarisering; fullt metallisk; geodetisk lins; Luneburg linsantenn; THz;

   Abstract : In the sub-THz frequency range, the geodesic lens can realize low losses and beam scanning capability with high gain and high aperture efficiency due to its fully metallic property and rotational symmetry. Therefore, in high-frequency applications, a geodesic lens is considered a more promising solution in comparison to phased arrays or other beamforming techniques. READ MORE

5. 4. Monitoring energy efficiency of heavy haul freight trains with energy meter data

   University essay from KTH/Spårfordon

   Author : Philipp Geiberger; [2021]
   Keywords : Energy consumption; Energy meter; Energy monitoring; Heavy haul freight train; Key performance indicator; Multi-particle model; Simulation; Energiförbrukning; Elmätare; Energiuppföljning; Tungt godståg; Nyckeltal; Flerpartikelmodell; Simulering;

   Abstract : In this MSc thesis, it is investigated what parameters are relevant for describing energy consumption of heavy haul freight trains and how these can be used to develop key performance indicators (KPIs) for energy efficiency. The possible set of KPI is bounded by data available from energy meters used in electric IORE class locomotives hauling iron ore trains in northern Sweden. READ MORE

6. 5. Modeling of a stand-alone liquid air energy storage

   University essay from Lunds universitet/Institutionen för energivetenskaper

   Author : Fabian Andersson; [2020]
   Keywords : Technology and Engineering;

   Abstract : The aim of this project was to create a model of the stand-alone LAES for use in future work at Siemens Industrial Turbomachinery (SIT). The model was created in IPSEpro with components developed from the software's standard library of power plant components. Required fluid properties were obtained from the Refprop DLL. READ MORE