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Electrical resonance change in a wind turbine

A technology for wind turbines and resonant frequency, which is applied in the direction of wind turbines, wind motor combinations, installation/support configurations of wind turbines, etc. It can solve the problems that the size cannot be easily changed, expensive, difficult, etc., and achieve low-cost effects

Pending Publication Date: 2021-02-02
SIEMENS GAMESA RENEWABLE ENERGY AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, meeting these limits becomes very difficult and expensive due to the requirements on radiation emissions, since even a low current of several mA flowing in the surface of the wind turbine will exceed these limits
Usually, the size of the element, i.e. the size of the enclosure of the element, defines the antenna characteristics of the element, but this size cannot be easily changed

Method used

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  • Electrical resonance change in a wind turbine
  • Electrical resonance change in a wind turbine
  • Electrical resonance change in a wind turbine

Examples

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Embodiment Construction

[0024] The legends in the figures are schematic. It is to be noted that in different figures, similar or identical elements are provided with the same reference signs.

[0025] figure 1 A wind turbine 1 is shown. The wind turbine 1 comprises a nacelle 3 and a tower 2 . The nacelle 3 is mounted at the top of the tower 2 . The nacelle 3 is mounted rotatably relative to the tower 2 by means of a yaw bearing. The axis of rotation of the nacelle 3 relative to the tower 2 is called the yaw axis.

[0026] The wind turbine 1 also includes three rotor blades 6 ( figure 1 The hub 4 of two of the rotor blades 6) is depicted in . The hub 4 is mounted rotatably relative to the nacelle 3 by means of main bearings 7 . The hub 4 is mounted rotatably about a rotor axis of rotation 8 .

[0027] Furthermore, the wind turbine 1 also includes a generator 5 . The generator 5 in turn comprises a rotor 10 connecting the generator 5 to the hub 4 . The hub 4 is directly connected to the gener...

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Abstract

It is described a wind turbine (1) comprising a plurality of elements including a tower (2), a nacelle (3) mounted to the tower (2) and a plurality of blades (6) rotatable mounted to the nacelle (3).At least one element of the tower (2), the nacelle (3) and the blades (6) comprises a coaxial impedance member (10) coaxially arranged about an axis of the element.

Description

technical field [0001] The invention relates to the field of wind turbines. A conventional wind turbine includes a number of elements including a tower, a nacelle mounted to the tower, and a plurality of blades rotatably mounted to the nacelle. Background technique [0002] Such conventional wind turbines have an electrical resonance frequency which is usually fixed due to the dimensions of the enclosure. The radio frequency that is radiated depends on how well the wind turbine emits the RF energy that is primarily generated by the energy conversion components. Limits are set in international standards, for example in the requirements for the radiation emissions of wind turbines. Here, some newly defined limit requirements are limited to frequencies down to about 150 kHz. However, wind turbines have dimensions corresponding to several hundred kHz and are included in the range set by recent standards. [0003] Typically, emissions are reduced by implementing filters and b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D80/00H01F27/36
CPCF03D80/00Y02E10/72Y02E10/728F03D9/25F03D13/20F03D80/70F03D1/0675F05B2240/14F05B2240/50F05B2240/912H05K9/0001H05K9/0073
Inventor J·妞温休曾
Owner SIEMENS GAMESA RENEWABLE ENERGY AS
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