Sökning: "wide band gap semiconductors"

Hittade 2 uppsatser innehållade orden wide band gap semiconductors.

1. 1. High-Frequency Voltage Distribution Modelling of a Slotless PMSM from a Machine Design Perspective

   Master-uppsats, KTH/Elkraftteknik

   Författare :Patrik Brauer; [2018]
   Nyckelord :Windings; drives; transients; surges; steep-fronted; slotless; litz-wire; effective relative permeability; Lindningar; elektriska drivlinor; transienter; spänningspulser; litz-tråd; effektiv relativ permeabilitet;

   Sammanfattning : The introduction of inverters utilizing wide band-gap semiconductors allow for higher switching frequency and improved machine drive energy efficiency. However, inverter switching results in fast voltage surges which cause overvoltage at the stator terminals and uneven voltage distribution in the stator winding. LÄS MER

3. 2. Plasmonic Effect of Metal Nanoparticles Deposited on Wide-Band Gap Metal Oxide Nanowire Substrate

   Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Författare :Mojtaba Gilzad Kohan; [2017]
   Nyckelord :plasmonic particles; nano wires; wide band gap semiconductors;

   Sammanfattning : The application of nanowires (NWs) in solar cells (SCs) is of great interest due to their new promising aspects established in nanoelectronics. Semiconductors associated with plasmonic metal nanoparticles (NPs) such as Silver (Ag), Gold (Au) and Copper (Cu), show enhanced performance in solid state light absorbing SCs owing to plasmonic characteristic of noble metal NPs. LÄS MER