Sökning: "power factor correction"

Visar resultat 1 - 5 av 20 uppsatser innehållade orden power factor correction.

1. 1. Joint CFR and DPD optimization for 5G Digital Front Ends

   Master-uppsats, Lunds universitet/Matematik LTH

   Författare :Gustav Olsson; [2023]
   Nyckelord :Crest Factor Reduction; Digital Pre-Distortion; Power Amplifier; Parameter Optimization; 5G; Base Station; Memory Polynomial; Technology and Engineering;

   Sammanfattning : This thesis project investigates the topic of joint optimization for crest factor reduction and digital predistortion blocks, which are used for digital correction of analogue impairments in digital radio front ends. The work first investigates the effects of joint parameter variation of the above blocks on the global performance and computational cost of the digital chain, given reference CFR and DPD algorithms. LÄS MER

3. 2. Bi-directional Charging System Design for a set of Li-ion Batteries Located at Angstrom Laboratory Campus of Uppsala University

   Master-uppsats, Uppsala universitet/Institutionen för elektroteknik

   Författare :Mosab Mohammed; [2023]
   Nyckelord :Onboard chargers; bidirectional charging system;

   Sammanfattning : In this study, onboard chargers for EVs are investigated and a design of bi-directional onboard chargers is proposed and simulated. The goal of the charger is to be built in the future to be used in the test setup at Uppsala University. LÄS MER

4. 3. Development of an on-board charger model for real time simulation

   Master-uppsats, KTH/Väg- och spårfordon samt konceptuell fordonsdesign

   Författare :Neil Wagle; [2022]
   Nyckelord :On board charger OBC ; Hardware in loop HIL ; Precharge; Power factor correction; Electric vehicle EV charging; Vehicle to grid V2G service; Omboardladdare OBC ; Hardware in loop HIL ; Precharge; Effektfaktorkorrigering; Laddning av elfordon; Tjänst för fordon till elnät;

   Sammanfattning : Electrification of vehicles is now one of the top priorities of automotive manufacturers in orderto comply with the sustainability goals and standards set by the United Nations. One of thedisadvantages faced by electric vehicles is a longer time required for charging the vehicles ascompared to refuelling a conventional vehicle. LÄS MER

5. 4. Normalization of Cooling Demand in Buildings, development, and evaluation of methods

   Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

   Författare :Xingtong Wu; [2022]
   Nyckelord :;

   Sammanfattning : Because of the increasing demand for indoor thermal comfort and the better insulation performance of building envelopes, cooling demand is an increasingly important part of building energy consumption despite the cold climate in Stockholm. Finding a way to normalize cooling demand to climatic conditions will help better energy audits to improve the building performance to achieve energy-saving. LÄS MER

7. 5. Isolated Single-Stage Interleave Resonant PFC Rectifier with Active and Novel Passive Output Ripple Cancellation Circuit

   Master-uppsats, Uppsala universitet/Institutionen för elektroteknik

   Författare :Abidemi Oluremilekun Eleyele; [2020]
   Nyckelord :single-stage AC DC converter; bridgeless power factor correction PFC rectifier; active passive ripple cancellation; zero current switching ZCS ; zero voltage switching ZVS ; Electric vehicle EV charger; LLC;

   Sammanfattning : With the increasing demand for fast, cheaper, and efficient power converters come the need for a single-stage power factor correction (PFC) converter. Various single-stage PFC converter proposed in the literature has the drawback of high DC bus voltage at the input side and together with the shift to wide bandgap switches like GaN drives the converter cost higher. LÄS MER