Sökning: "voltage rise"

Visar resultat 11 - 15 av 66 uppsatser innehållade orden voltage rise.

1. 11. Parameter Tuning in a Jet Printing Machine usingReinforcement Learning

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

   Författare :ALEXANDER MURTAZA; [2021]
   Nyckelord :Jet printer; Reinforcement Learning; Q-learning; Parameter tuning; Surface mount technology; Jet printer; Förstärkande inlärning; Q-learning; Parameter justering; Ytmontering;

   Sammanfattning : Surface mount technology is a common way to assembly electrical components onto PrintedCircuit Boards (PCB). To assemble the components, solder paste is used. One way to apply solderpaste onto PCB is jet printing. LÄS MER

3. 12. Energy Storage for Voltage Control in LV Grids

   Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Industriell elektroteknik och automation

   Författare :Ida Samnegård; [2021]
   Nyckelord :Technology and Engineering;

   Sammanfattning : This thesis addresses overvoltage issues in weak low voltage grids caused by large solar power production. The suggested method is using PI controllers to control voltage. This is done by using battery energy storage systems (BESS), designed to absorb active power during these times and thereby limiting the voltage rise. LÄS MER

4. 13. Li-ion titanate technology for SLI battery applications in commercial vehicles

   Master-uppsats, KTH/Kemiteknik

   Författare :Liliya Vasilevich; [2021]
   Nyckelord :Lithium-titanate battery LTO ; overdischarge; battery testing; KERS; heavy-duty vehicles; Litium titanat batteri LTO ; överurladdning; batteritestning; KERS; tunga fordon;

   Sammanfattning : Litiumjon-batterier har blivit väldigt populära för tillämpning i fordon. Den här teknologin har fler olika kemier att erbjuda som kontinuerligt förbättras. Litium-titanat-oxid-batterier använder (LTO) LTO som anod och erbjuder långt cyklingsliv samt minskar risk för SEI-bildning och litiumplätering. LÄS MER

5. 14. Cross-Country Faults in Resonant-Earthed Networks

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

   Författare :Gabriel Miguel Gomes Guerreiro; [2020]
   Nyckelord :Cross- country fault; resonant earthing; compensated network; MV network; distance protection; fault analysis; RTDS EMTDC.; dubbla jordfel; spoljordning; jordfelskompenserade elnät; mellanspänningsnät; distansskydd; reläskydd; RTDS EMTDC.;

   Sammanfattning : Reliability requirements for power systems have been constantly increasing, as customers of electric power desire high power availability. In order to improve continuity of supply in medium voltage (MV) networks, utilities in many countries in Europe, North/South America and Oceania use resonant earthing and allow the operation of the network during a single phasetoearth fault for periods from several seconds up to several hours, since the earthfault current at the fault point in such systems is considerably reduced and is unlikely to damage equipment or create hazardous voltages for people or livestock. LÄS MER

7. 15. Investigation and Application of Safety Parameters for Lithium-ion Battery Systems

   Master-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

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

   Sammanfattning : 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. LÄS MER