Sökning: "DC DC converters"

Visar resultat 11 - 15 av 91 avhandlingar innehållade orden DC DC converters.

  1. 11. EMI from Switched Converters – Simulation Methods and Reduction Techniques

    Författare :Andreas Henriksson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; state space methods; EMI; semiconductor device modeling; diode reverse recovery; diode modeling; conducted emissions; Semiconductor device measurements; DC DC converters;

    Sammanfattning : In this thesis, the conducted EMI from switched power converters has been analyzed using various existing models, own-derived models as well as measurements. The ingoing passive components in a switching converter have been modeled with respect to their high frequency behavior and the static and dynamic behavior of the active semiconductors has been analyzed. LÄS MER

  3. 12. Grid Connected Three-Level Converters : Studies for Wave Energy Conversion

    Författare :Remya Krishna; Mats Leijon; Karin Thorburn; Uppsala universitet; []
    Nyckelord :Wave energy; power converters; control strategies; grid connection; Teknisk fysik med inriktning mot elektronik; Engineering Science with specialization in Electronics;

    Sammanfattning : This thesis presents an electrical system analysis of a wave energy converter (WEC) for the objective of grid connection. To transfer the enormous amount of power from waves to the load centers, efficient power electronic systems are essential. LÄS MER

  4. 13. MOSFET Modeling Aimed at Minimizing EMI in Switched DC/DC Converters Using Active Gate Control

    Författare :Andreas Henriksson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electromagnetic interference; Semiconductor device modeling; Adaptive control; MOSFET switches; Electromagnetic compatibility; State space methods; DC-DC power conversion; Power semiconductor diodes; Semiconductor device measurements;

    Sammanfattning : This thesis deals with electromagnetic interference that can arise from switched DC/DC-converters intended for low-power applications, e.g. within the telecom or automotiveindustry. LÄS MER

  5. 14. Design and control of a DC collection grid for a wind farm

    Författare :Lena Max; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; DC collection grid; fault handling; DC DC converter; wind energy; control design; loss evaluation;

    Sammanfattning : In this thesis, the internal DC collection grid for a wind farm is investigated regarding the design, losses and dynamic operation for both normal operating conditions and for different fault conditions. The main advantage for the DC collection grid is the considerably lower weight of the 1 kHz transformers in the DC/DC converters compared to the equivalent 50 Hz transformers. LÄS MER

  7. 15. On high-frequency soft-switching DC-converters for high-voltage applications

    Författare :Per Ranstad; KTH; []
    Nyckelord :soft-switching; dc-converter; high-frequency; high-voltage;

    Sammanfattning : .... LÄS MER