Wind turbine tower

Wind turbine tower

  • CN 104,769,280 B
  • Filed: 08/22/2013
  • Issued: 09/25/2020
  • Est. Priority Date: 08/23/2012
  • Status: Active Grant
First Claim
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1. A self-supporting wind turbine tower having a wall, the self-supporting wind turbine tower comprising:

  • an upper portion; and

    a lower portion separate from the upper portion,wherein the upper part is mounted above the lower part to form a tower,wherein substantially all of the upper portion is formed of a composite plastic and the upper portion is divided into a plurality of segments arranged circumferentially along the tower, anWherein substantially all of the lower portion is formed of low carbon steel,wherein the self-supporting wind turbine tower has a lower mass and a higher natural frequency than a corresponding tower made of mild steel, anWherein the composite plastic is a fiber-reinforced plastic and 50 to 100% of the fibers are arranged at 0 degrees with respect to the axial direction, at most 50% of the fibers are arranged at +/-45 degrees with respect to the axial direction and at most 30% of the fibers are arranged at 90 degrees with respect to the axial direction, andwherein the tower has a circular cross-section or an elongated cross-section having a streamlined airfoil shape, and the upper portion is divided into a plurality of segments along the hoop direction.

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