Title:
ABRASION DETECTION DEVICE, WIND POWER GENERATOR EQUIPPED THEREWITH, AND ABRASION DETECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2011/111730
Kind Code:
A1
Abstract:
Once it is determined that blades are rotating (Yes in S10), a control unit actuates a braking unit (S20) and acquires a rotation angle (first rotation angle) from a rotation angle sensor (S30). Subsequently, the control unit reverses the nacelle (S40) and acquires a rotation angle (second rotation angle) from the rotation angle sensor (S50). Then, the control unit determines whether or not the difference between the first rotation angle and the second rotation angle is greater than a threshold value (S60). If the rotation angle difference is determined to be greater than the threshold value (Yes in S60), the control unit determines that the bearing or the gear of a speed-up device is abraded (S75).
More Like This:
| WO/2001/048377 | ROTOR BLADE FOR A WIND POWER INSTALLATION |
| WO/2011/115355 | VERTICAL-AXIS WIND-POWERED GENERATOR |
| JP2009197700 | VERTICAL WIND MILL BLADE |
Inventors:
SAKAGUCHI TOMOYA (JP)
Application Number:
PCT/JP2011/055467
Publication Date:
September 15, 2011
Filing Date:
March 09, 2011
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
SAKAGUCHI TOMOYA (JP)
SAKAGUCHI TOMOYA (JP)
International Classes:
F03D11/00; F03D11/02; F16C19/02; F16C19/22; F16C19/52; F16C41/00; F16H57/01
Foreign References:
| JP2006161624A | 2006-06-22 | |||
| JP2004525295A | 2004-08-19 | |||
| JP2003511657A | 2003-03-25 | |||
| JP2007502382A | 2007-02-08 | |||
| JP2008082579A | 2008-04-10 | |||
| JP2005164314A | 2005-06-23 |
Other References:
See also references of EP 2546518A4
Attorney, Agent or Firm:
Fukami Patent Office, p. c. (JP)
Patent business corporation Fukami patent firm (JP)
Patent business corporation Fukami patent firm (JP)
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Claims: