Sökning: "Frequency converter"

Visar resultat 16 - 20 av 154 uppsatser innehållade orden Frequency converter.

1. 16. TUNABLE ANTENNAS FOR CLOSED-LOOP SYSTEMS

   Master-uppsats, Blekinge Tekniska Högskola/Institutionen för datavetenskap

   Författare :ManiChandana Chowki; Shrutha Keerthi Reddy Nagaiahgari; [2023]
   Nyckelord :Closed-loop Systems; Tunable Antennas; Radio Frequency RF ; MCU in closed-loop Systems; Adaptable Tuning; Antenna Impedance Matching Adaptive Antennas.;

   Sammanfattning : Tunable antennas have emerged as a promising technology to address the challenges of achieving optimal performance across a wide range of frequencies. This abstract presents a study focused on designing and implementing an ideal antenna system design within a closed-loop system. Background. LÄS MER

3. 17. Investigation of switching power losses of SiC MOSFET : used in a DC/DC Buck converter

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :André Xavier Svensson; [2022]
   Nyckelord :Switching power losses; Metal Oxide Semiconductor Field Effect Transistor; Silicon carbide; Synchronous Buck converter; Wide Band Gap; Double Pulse Test; Efficiency; Temperature; Växlande effektförluster; Fälteffekttransistor; Kiselkarbid; Synchronous Buck omvandlare; Wide Band Gap; Double Pulse Test; Verkningsgrad; Temperatur;

   Sammanfattning : All DC/DC converter products include power electronic circuits for power conversion.It is important to find an efficient way for power conversion to reduce power losses and reduce the need for cooling and achieve environmentally friendly solutions.The use of semiconductor switches of wide band gap type is a solution to the problem. LÄS MER

4. 18. Damping of sub-synchronous control interactions with a STATCOM : Wind farms & series compensated power lines

   Master-uppsats, Uppsala universitet/Institutionen för elektroteknik

   Författare :Leonardo Alvarez Urrutia; [2022]
   Nyckelord :Sub-Synchronous Control Interactions; Power Systems; STATCOM; Network Stability; Doubly-Fed Induction Generator; Impedance-Based Stability Analysis;

   Sammanfattning : The power converter is one of the key components in power system applications such as high voltage direct current (HVDC) systems and the grid connection of intermittent sources such as wind and solar power. However, the increased penetration of converter-based generation introduces challenges, such as sub-synchronous interaction between the converter control system and the grid. LÄS MER

5. 19. Design of radio frequency energy harvesting system : for use in implantable sensors

   Master-uppsats, Linköpings universitet/Elektroniska Kretsar och System; Linköpings universitet/Tekniska fakulteten

   Författare :Amir Ebrahimi; David Kihlberg; [2022]
   Nyckelord :RF energy harvesting; RF rectifier; efficiency; voltage sensor; voltage doubler;

   Sammanfattning : Implantable biomedical wireless sensors provide monitoring of vital health signs such as oxygen, temperature and intraocular pressure and may help to analyse and detect diseases in humans and animals. However, one of the design challenges of implantable devices is providing a safe and reliable energy source. LÄS MER

7. 20. Frequency Stability of Power Electronic Based Power System with 100% Renewable Energy.

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Abdullah Albalali; [2022]
   Nyckelord :energy storage; frequency control; synchronous generators; distributed power generation; virtual synchronous machine VSM ; PSCAD.; energilagringssystem; frekvenskontroll; synkrona generatorer; distribuerad kraftproduktion; virtuell synkron maskin; PSCAD.;

   Sammanfattning : The modern power system is aiming to progress away from conventional synchronous machine  based power generation towards converter dominated system that leads to extensively high penetration of renewable energy such as wind and PV. This transition of modern power system toward converter based renewable energy comes with new challenges as the conventional synchronous generation is being replaced by converter based power system (CBPS). LÄS MER