Essays about: "Mechanical losses"

Showing result 16 - 20 of 80 essays containing the words Mechanical losses.

  1. 16. 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

  3. 17. Crosslinked Cartonboard - Challenges and possibilities

    University essay from Mälardalens universitet/Akademin för innovation, design och teknik

    Author : Malin Elvin; [2022]
    Keywords : Cartonboard; crosslinking; mechanical properties; SCT;

    Abstract : The need for sustainable packaging is growing, and plastic waste needs to be reduced. A suitable alternative could be fibre-based packaging and cartonboard, and several actions could enhance this alternative. This study investigates crosslinking, a method to create stronger bonds between the OH-groups in the material. READ MORE

  4. 18. Optimal collection grid and transmission line topology for the grid connection of an offshore multi-source park.

    University essay from Uppsala universitet/Elektricitetslära

    Author : Alfred Nerby; [2022]
    Keywords : Renewable; Wind; Solar; multi-source; park; collection grid; substation; transmission; HVAC; HVDC; converters; shunt reactors; transformer; losses; CAPEX; OPEX;

    Abstract : As spacial restrictions become more and more of an issue for renewable energy parks onshore, more developers are turning offshore to develop future production. The desire for a diversity of energy sources combined with a desire to utilize space efficiently has sparked an interest in renewable energy parks where more than one energy source occupy the space. READ MORE

  5. 19. Blåklint : ett ökande problem i svensk växtodling

    University essay from SLU/Dept. of Crop Production Ecology

    Author : Johan Johnsson; [2021]
    Keywords : bekämpning; biologi; blåklint; Centaurea cyanus L; herbicider; intervjuer; konkurrensstarka grödor; rådgivare; seriesammanställning; växtföljd;

    Abstract : Blåklint (Centaurea cyanus L) är ett vinterannuellt örtogräs som kan orsaka kraftiga skördesänkningar i odlade grödor. Den är idag ett ökande problem i svensk växtodling eftersom höstsådda grödor odlas i stor utsträckning. READ MORE

  6. 20. Permanent magnet synchronous machine using ferrite vs rare earth magnets : how do they compare?

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

    Author : Nikhil Manakshya; [2021]
    Keywords : Vehicle requirement; drive cycle; ferrite magnet; demagnetisation; environmental impact.; Fordonsbehov; körcykel; ferritmagnet; avmagnetisering; miljöpåverkan.;

    Abstract : Permanent magnet synchronous machines (PMSM are considered as viable options for automotive and traction applications. Rare earth magnets such as Neodymium Iron Boron (NdFeB is the most common choice in the PMSM for electric vehicles to achieve high power density machines. READ MORE