Sökning: "Inverter"

Visar resultat 6 - 10 av 92 avhandlingar innehållade ordet Inverter.

  1. 6. Using life cycle assessment to support the development of electrified road vehicles. Component data models, methodology recommendations and technology advice for minimizing environmental impact

    Författare :Anders Nordelöf; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; inverter; magnet; LCI; electrical machine; stepwise improvements; electric vehicle; LCA; inventory data; motor; critical review; scalable model;

    Sammanfattning : The anthropogenic pressure on the Earth system already overshoots safe limits for climate change, so there is an urgent need to drastically reduce greenhouse gas emissions caused by transportation. Electric propulsion technology is a promising solution that can decouple fossil fuel use from road vehicle traffic. LÄS MER

  3. 7. On magnetic amplifiers in aircraft applications

    Författare :Lars Austrin; Göran Engdahl; Lars Liljestrand; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; magnetic amplifier magamp ; amorphous; power losses; control winding; self-saturating; hysteresis; converter; more electric aircraft MEA ; inverter; power-by-wire; dymola; permanent magnet generator; PM-generator transformer rectifier unit TRU ; constant speed drive CSD ; excess losses or anomalous losses; modeling; simulation; unmanned aerial vehicle UAV ; Electrical engineering; Elektroteknik;

    Sammanfattning : In the process of designing an electric power supply system for an aircraft, parameters like low weight and low losses are important. Reliability, robustness and low cost are other important factors. LÄS MER

  4. 8. SiC CMOS and memory devices for high-temperature integrated circuits

    Författare :Mattias Ekström; Carl-Mikael Zetterling; B. Gunnar Malm; Tobias Erlbacher; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; bismuth titanate Bi4Ti3O12 ; CMOS; ferroelectric capacitor; field oxide; inverter; metallisation; metal oxide semiconductor field effect transistor MOSFET ; ohmic contacts; ring oscillator; semiconductor processing; silicon carbide 4H-SiC ; CMOS; ferroelektrisk kondensator; fältoxid; halvledartillverkning; inverterare; kiselkarbid 4H-SiC ; metallisering; MOSFET; ohmska kontakter; ringoscillator; vismuttitanat Bi4Ti3O12 ; Informations- och kommunikationsteknik; Information and Communication Technology;

    Sammanfattning : High-temperature electronics find use in extreme environments, like data logging in downhole drilling for geothermal energy production, inside of high-temperature turbines, industrial gas sensors and space electronics. The simplest systems use a sensor and a transmitter, but more advance electronic systems would additionally require a microcontroller with memory. LÄS MER

  5. 9. Experimental results from the Lysekil Wave Power Research Site

    Författare :Olle Svensson; Mats Leijon; Jörgen Blennow; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wave power; Lysekil; Marine Substation; Offshore measurement; strain gauge; lateral force; Invlination and azimuth angles; Wave energy converter; Temperature measurements; Inverter; Energy; Control sustem; CompactRIO; Vågkraft; Mätteknik; Styrsystem; Lysekil; Engineering Science; Teknisk fysik;

    Sammanfattning : This thesis presents how experimental results, from wave power research performed offshore at the Lysekil research site, were obtained. The data were used to verify theoretical models as well as evaluate the feasibility of wave power as a future sustainable energy source. LÄS MER

  7. 10. Dimensioning Tools of MEA Actuator Systems, Including Modeling, Analysis and Technology Comparison

    Författare :Mohsen Torabzadeh-Tari; Göran Engdahl; Hans Bernhoff; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Dimensioning tools; MEA; More Electric Aircraft; EMA; Electro Mechanical Actuator; EM; Electrical Machine; Converter; Inverter; Finite Element Method; FEM; Electrical engineering; electronics and photonics; Elektroteknik; elektronik och fotonik;

    Sammanfattning : Aircraft design is an example of complex engineering where dimensioning tools can be valuable for the designers and decision makers in the early stage of the development process. These tools can be in form of a database over key numbers for different components or technologies. One of the critical parts of an aircraft is the actuator system. LÄS MER