Sökning: "kontaktmotstånd"
Hittade 4 uppsatser innehållade ordet kontaktmotstånd.
1. Fabrication and characterization of GaAsxP1-x single junction solar cell on Si for III-V/Si tandem solar cell
Master-uppsats, KTH/Tillämpad fysikSammanfattning : Silicon based solar cells have been used as photovoltaic devices for decades due to reasonable cost and environment- friendly nature of silicon. But the conversion efficiency of silicon solar cell is limited; for instance, the maximum conversion efficiency of a crystalline silicon solar cell available in the market developed by Kaneka Corporation is 26 % [1]. LÄS MER
2. Accelerated Testing of the End-plate Assembly of a Redox Flow Battery
Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)Sammanfattning : As the world transitions to intermittent renewable energy sources like solar and wind, the need for long-duration energy storage technologies is becoming more and more prominent. In this regard, flow batteries are seen as a promising solution, owing to their inherent advantages like decoupling of power and energy, extremely high cycle life and negligible self-discharge. LÄS MER
3. Cooling simulation of a BEV electrical machine rotor
Master-uppsats, KTH/FordonsdynamikSammanfattning : The thesis work described in this report is about simulation of the cooling of an electrical machine rotor. Limitations and simplifications were made on the CAD model of the rotor with the purpose of reducing the simulation time, for it to then be used for CFD-simulations using STAR-CCM+. LÄS MER
4. Characterization of GaNbased HEMTs for power electronics
Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)Sammanfattning : Gallium nitride (GaN) based high electron mobility transistors (HEMTs) are promising for power electronic applications due to their high breakdown voltage and power efficiency compared to Si-based power devices. As known, the design of the HEMT has high impact on the performance of the devices. LÄS MER