Sökning: "low density"

Visar resultat 6 - 10 av 1832 avhandlingar innehållade orden low density.

  1. 6. Towards Low-Voltage, High-Current : A pioneering drive concept for battery electric vehicles

    Författare :Stefan Haller; Kent Bertilsson; Bengt Oelmann; Peng Cheng; Dieter Gerling; Mittuniversitetet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; low voltage; high current; EV; BEV; electrical machine; power electronics; MOSFET;

    Sammanfattning : The first electric low-voltage vehicles were constructed in the mid-19th century, but by the early 20th century they were progressively replacedby successors with internal combustion engines. As the consequences ofusing fossil fuels are better understood, our society is now transitioning back. LÄS MER

  3. 7. Experimental study on the aggregation of low density suspensions in turbulent flow

    Författare :Sachida N. Kapilashrami; KTH; []
    Nyckelord :Aggregation; Cohesive suspension; Non-cohesive suspension; Carrier flow; Low-density suspension; Parent suspension; Test suspension;

    Sammanfattning : .... LÄS MER

  4. 8. Integrated In-Wheel Motors for Low Power Traction Application

    Författare :Prakashraj Kasinathan; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; electric golf cart; integral-slot; force density; flux-linkage; traction motors; forklift trucks; direct-drive; electric wheelchairs power wheelchairs; low speed machines; fractional-slot;

    Sammanfattning : This thesis is primarily concerned with the practical limits, imposed by magnetic saturation and thermal considerations, of the force density in low-speed permanent-magnet electric machines. The practical force density values obtainable in integral- and fractional-slot machines are determined. LÄS MER

  5. 9. Evaluation of physical properties of steels

    Författare :Ulrich Bohnenkamp; KTH; []
    Nyckelord :ferritic steels; low alloy steels; austenitic steels; physical properties; density; elastic modulus; electrical resistivity; regression analysis.;

    Sammanfattning : .... LÄS MER

  7. 10. Low-coordinate Organosilicon Chemistry : Fundamentals, Excursions Outside the Field, and Potential Applications

    Författare :Muhammad Rouf Alvi; Henrik Ottosson; Joji Ohshita; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; organosilicon; silene; silaaromatics; silenolate; hypersilyl group; alcohol protection; molecular switch; Kemi med inriktning mot organisk kemi; Chemistry with specialization in Organic Chemistry;

    Sammanfattning : This thesis reports on unsaturated silicon compounds, as well as excursions from these into germanium chemistry, single molecule electronics, and silyl protective group chemistry. Both experimental and computational investigations were performed. LÄS MER