Sökning: "Axel Thorstrand"

Hittade 2 uppsatser innehållade orden Axel Thorstrand.

1. 1. HVDC transformer core resonance calculation

   Master-uppsats, KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

   Författare :Axel Thorstrand; [2021]
   Nyckelord :HVDC; High Voltage Direct Current; Transformer core; Natural frequencies; Energy method-based equation; HVDC; Högspänning likström; Transformatorkärna; Naturliga frekvenser; Energimetod;

   Sammanfattning : Transformers emit a characteristic humming noise due to magnetostriction which is the continuous change in dimensions during magnetization. The noise is amplified if the induced frequencies match the core’s natural frequencies, consequently avoiding geometries that create resonance is critical in order to fulfill customer sound level requirements. LÄS MER

3. 2. Maglev deployment in winter climate

   Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

   Författare :Axel Thorstrand; [2020]
   Nyckelord :;

   Sammanfattning : As of year 2020, maglev train systems are not in service in areas with harsh winter climate. Compared to conventional railway, the technology is relatively new and untested in conditions of low temperatures, icing and snow. LÄS MER