Essays about: "impedans"

Showing result 16 - 20 of 40 essays containing the word impedans.

  1. 16. Stabilization of Constant Power Loads Using Model Predictive Control

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

    Author : Mikael Glamheden; [2020]
    Keywords : ;

    Abstract : This thesis considers stabilization of constant power loads (CPLs) fed by a dcpower source through an input filter, using model predictive control (MPC).Train propulsion systems generally utilize electrical motors whose output torqueis tightly regulated by power converters. Often, these systems behave as CPLs. READ MORE

  3. 17. Towards a method for antenna impedance tailoring through shapeoptimization, with a bound on the associated cost-function

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

    Author : Cem Kesici; [2020]
    Keywords : ;

    Abstract : Over the last years, there has been an interest in designing antennas that operateat higher frequencies. In most applications, these antennas work jointly withPower Amplifiers. However, most commercial Power Amplifiers have a nonstandardoptimal load-pull impedance in their optimal operating frequencies. READ MORE

  4. 18. Investigation and Application of Safety Parameters for Lithium-ion Battery Systems

    University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Author : Axel Relefors; [2020]
    Keywords : Lithium-ion battery; thermal runaway; accelerating rate calorimetry; electrochemical impedance spectroscopy; thermal management; Litiumjonbatteri; termisk rusning; kalorimeter; elektrokemisk impedansspektroskopi; värmereglering;

    Abstract : The Swedish Armed Forces are investigating high-risk applications where lithium-ion batteries (LIB) can replace traditional lead-acid batteries. Understanding the potential safety risks and evaluating a battery's instability is crucial for military applications. READ MORE

  5. 19. Evaluation of OSTE-hybrid materials for acoustophoresis applications

    University essay from KTH/Medicinteknik och hälsosystem

    Author : Elin Forss; [2020]
    Keywords : Acoustophoresis; off-stoichiometry-thiol-enes; OSTE; microfluidics;

    Abstract : This project aimed at exploring new hybrid materials to be used for acoustophoresis applications. Acoustophoresis can be used to manipulate particles inside a microfluidic channel by creating ultrasound standing waves within the channel [1]. This can be used for cell separation [2] or trapping of particles [3]. READ MORE

  6. 20. Fluid/Material Coupled Numerical Analysis of Single Bubble Collapse Near a Pit on a Wall

    University essay from KTH/Strömningsmekanik och Teknisk Akustik

    Author : Daiki Makii; [2020]
    Keywords : Bubble Dynamics; Cavitation Erosion; Numerical Analysis; Fluid Material Coupled Numerical Method; Homogeneous Model; Elastic Body Material; Erosion Pit;

    Abstract : In order to elucidate the progression mechanism of cavitation erosion, the behaviors of a single cavitation bubble collapse near a pit on a wall and both the resulting pressure wave in fluid and stress wave in material are investigated in detail. To find out the mechanism of cavitation erosion, many experimental studies on the bubble collapse behavior near a flat rigid wall and the resulting material damage have been conducted so far. READ MORE