Sökning: "Lightning"

Visar resultat 6 - 10 av 68 avhandlingar innehållade ordet Lightning.

  1. 6. Electromagnetic Interference to Electrified Railway Network Caused by Lightning: Development of Computation Models

    Författare :Nelson Theethayi; Rajeev Thottappillil; Uppsala universitet; []
    Nyckelord :Railway EMC; Lightning;

    Sammanfattning : .... LÄS MER

  3. 7. Some Properties of Lightning Flashes to a Tall Tower on a Mountain Top

    Författare :Helin Zhou; Rajeev Thottappillil; Gerhard Diendorfer; Farhad Rachidi; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; tall tower; mountain top; effective height; field enhancements; upward lightning initiation; upward positive lightning; upward bipolar lightning;

    Sammanfattning : .... LÄS MER

  4. 8. Oxidized nitrogen in the troposphere : the role of lightning

    Författare :Laura Gallardo Klenner; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  5. 9. The Effects of Lightning on Low Voltage Power Networks

    Författare :Raul Montaño; Vernon Cooray; Marcos Rubinstein; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical engineering; Lightning induced effects; Lightning Electromagnetic fields; Electromagnetic Compatibility EMC ; Surge Protective Devices SPDs ; Low voltage power networks; Elektroteknik; elektronik och fotonik; Electrical engineering; electronics and photonics; Elektroteknik; elektronik och fotonik;

    Sammanfattning : The present society is highly dependant on complex electronics systems, which have a low damage threshold level. Therefore, there is a high risk of partial or total loss of the system’s electronics when they are exposed to a thunderstorm environment. LÄS MER

  7. 10. On the Attachment of Lightning Flashes to Wind Turbines

    Författare :Mengni Long; Marley Becerra; Rajeev Thottappillil; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wind turbines; upward lightning; lightning attachment of dart and dart-stepped leaders;

    Sammanfattning : The work presented in this thesis aims at investigating the attachment of lightning flashes to wind turbines. Modern wind turbines are highly exposed to lightning strikes, due to the increase of their height and the rotation of the blades. Upward lightning is the dominant mechanism of lightning strikes to them. LÄS MER