Sökning: "Resistive load"

Visar resultat 1 - 5 av 18 uppsatser innehållade orden Resistive load.

1. 1. Inductive fast charging of IoT devices : An in-depth analysis of short-range wireless charging technologies based on induction

   Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för fysik

   Författare :Franz Wikner; [2024]
   Nyckelord :Electromagnetic power transfer; Inductive power transfer; Short distance WPT;

   Sammanfattning : In the era of Internet of things (IoT), sensor-equipped devices exchange data over networks. In battery powered IoT devices, the lifespan of the devices is often much longer than the battery life, leading to multiple costly and environmentally hazardous battery replacements during the operational life of the devices. LÄS MER

3. 2. INDUCTIVE RAILWAY SWITCH POINT HEATING : Improved control algorithm and phase compensation analysis for an inductive turnout heating system, and comparison with a resistive heating system

   Uppsats för yrkesexamina på grundnivå, Mälardalens universitet/Akademin för ekonomi, samhälle och teknik

   Författare :Erik Nordlund; [2023]
   Nyckelord :Inductive switch point heating; Turnout heating; railway turnout heating; Inductive heating;

   Sammanfattning : Railway turnout heating is essential during the winter because snow and ice can hinder the movement of the switch. In Sweden, heating has traditionally been done using resistive heating wires mounted to the stock rail, but the technology is outdated and generally exhibits low efficiency and performance. LÄS MER

4. 3. Tribological characterization of a ball bearing subjected to an electric field : Electric drivetrain tribology

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

   Författare :Muhammad Umar Farooq; [2023]
   Nyckelord :Ball bearing; electric drivetrain; tribology; electric field; characterization; bearing currents; discharge;

   Sammanfattning : Electric machines are widely used in for instance the automotive industry in electric vehicles and in wind turbines. The electrical machines have mechanical bearings as an integral part used to transmit power and load. In addition, the main function includes reducing friction between interacting surfaces. LÄS MER

5. 4. Parallel Operation of Grid-Forming Power Inverters

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

   Författare :Alessia Camboni; [2023]
   Nyckelord :;

   Sammanfattning : The use of renewable energy sources has been increasing during the last few years, both to obtain a less impacting energy production, and because of the limited fossil resources. Renewable sources are connected to the grid using inverters, which can be controlled in two main modes, grid-following, and grid-forming. LÄS MER

7. 5. Thermal Modeling and Simulationwith High Voltage Solid StateRelays for Battery DisconnectionApplications : The potential of replacing mechanical contactors with semiconductors

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Elektricitetslära

   Författare :David Radisic; Johan Mårtensson; [2023]
   Nyckelord :SSR; SSCB; SiC MOSFET; BEV; Pre-charge; Solid-state relay; Solid-state circuit breaker; Electric vehicles; DC fast-charge; Simulink; BDU;

   Sammanfattning : The swift shift of the automotive industry towards electrification is primarily propelled by technological advancements in battery technology. To stay competitive and meet the new demands of the industry, there is a crucial need for novel ideas and innovation. LÄS MER