Sökning: "zero-voltage"

Visar resultat 1 - 5 av 6 uppsatser innehållade ordet zero-voltage.

  1. 1. Energy Efficency Investigation of a 3kW DC/DC Converter for Electric Vehicle Applications using Full Wave and Current Doubler Synchronous Rectification

    H-uppsats, Chalmers tekniska högskola/Institutionen för energi och miljö

    Författare :Artur Puzinas; Siavash Sadeghpour; [2013]
    Nyckelord :Full bridge DC DC converter; modeling; zero-voltage switching; current doubler;

    Sammanfattning : The Master's Thesis is devoted to quantify and verify the performance oftwo full-bridge DC/DC converter topologies that are suitable for usage in ahybrid electric vehicle, whereas possible improvements should be proposedand implemented. The two topologies investigated are the full bridge withfull wave rectification and full bridge with current doubler synchronous rectification. LÄS MER

  2. 2. Power Electronic design of a Multi MW dc/dc converter

    H-uppsats, Chalmers tekniska högskola/Institutionen för energi och miljö

    Författare :Mihhail Alifanov; [2013]
    Nyckelord :Single active bridge; Dual active bridge; dc dc converter; lossless switching; SAB; DAB;

    Sammanfattning : • In this thesis, two topologies from a Zero voltage switching family are compared in terms of thepower losses and weight of the magnetic components. These prerequisites are dictated by the purposeof the application - an offshore converter platform for an HVDC line. LÄS MER

  3. 3. Design, simulation and evaluation of two different topologies for the 2.4 MW 4/6 kV DC-DC fullbridge converter

    H-uppsats, Chalmers tekniska högskola/Institutionen för energi och miljö

    Författare :Majid Fazlali; Maziar Mobarrez; [2012]
    Nyckelord :DC-DC fullbridge converter; hard-switched converter; soft-switch converter; zero-voltage; switching; phase shift control; switching losses; high power density transformer;

    Sammanfattning : In this thesis, a hard switched and zero-voltage switching fullbridge converter for high power applicationsare compared in terms of their losses. Important issues in designing these kind of converters are to achievehigh efficiency with low cost and low weight. LÄS MER

  4. 4. Design of a 2.5kW DC/DC fullbridge converter

    H-uppsats, Chalmers tekniska högskola/Institutionen för energi och miljö

    Författare :Christian Andersson; [2011]
    Nyckelord :;

    Sammanfattning : In this thesis, an isolated 2.5kW fullbridge DC/DC converter has been designed and analyzedregarding its efficiency and weight.By increasing the switching frequency, the magnetic components in the converter can be madesmaller, in this thesis a switching frequency of 20 kHz has been compared with a switchingfrequency of 100 kHz. LÄS MER

  5. 5. Fault Ride-through of Wind Parks with Induction Generators

    H-uppsats, Chalmers tekniska högskola/Institutionen för energi och miljö

    Författare :Cuong Duc Le; [2009]
    Nyckelord :collector system; wind park; induction generator; fault ride-through; grid code compliance;

    Sammanfattning : This project deals with the design of the collector system for large wind parks and the study of reactive power compensation techniques to help the wind park meet grid code requirements, especially concerning fault ride-through. In this study, the wind turbine generators are selected to be fixed-speed induction generators without reactive power controllability. LÄS MER

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