Sökning: "IGCT"

Hittade 2 avhandlingar innehållade ordet IGCT.

1. 1. Cost-effective Cells for High-power Modular Multilevel Converters

   Författare :Matthijs Heuvelmans; Staffan Norrga; Hans-Peter Nee; Rik De Doncker; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MMC; modular multilevel converter; ARCP; IGCT; soft-switching; ZVS; ZCS; snubber; thyristor; SCR; silicon controlled rectifier; HVDC; STATCOM; Electrical Engineering; Elektro- och systemteknik;

   Sammanfattning : The modular multilevel converter (MMC) topology was introduced in 2003and has since been receiving considerable attention from industry and academia.Notable benefits compared to two- or three-level voltage source convertersare its scalability, low switching losses, low output filter requirementsand ease of adding redundancy combined with fail-safe operation. LÄS MER

3. 2. Treatment of social phobia : development of a method and comparison of treatments

   Författare :Ewa Mörtberg; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Social phobia; Intensive Group Cognitive Treatment; Individual Cognitive Therapy; Treatment as Usual; Drug treatment; Randomized Controlled Trial; Temperament and Character dimensions;

   Sammanfattning : Social phobia is a common (13 %) and disabling anxiety disorder associated with considerable social and occupational handicap. It is not likely to remit without treatment. LÄS MER