Title:
WIND MEASUREMENT LIDAR DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/209279
Kind Code:
A1
Abstract:
With conventional methods, there is a reduction in the prediction accuracy of arriving wind information, such as arriving wind speed or wind direction. This wind measurement LIDAR device 1B: is mounted on a windmill 2; transmits, through the atmosphere, transmission light, which is pulsed laser light, in a plurality of beam directions determined with respect to the front direction of the windmill 2; and measures the wind speed in the beam directions at a plurality of distances from the windmill, from the Doppler frequency deviation with respect to transmission light of reflected light, which is the transmission light reflected by particles that move together with the atmosphere. This invention comprises: spectrum integration units 12c, 12e that obtain an integrated spectrum, which is an integration, for each wind speed measurement section consisting of a combination of a beam direction and a time section, of a spectrum obtained from split reception signals of a plurality of pulses transmitted after the wind speed was calculated previously; a wind speed calculation unit 12h that calculates a wind speed for each wind speed measurement section, for an integrated spectrum with an SN ratio that is at least a first threshold value; and an arriving wind information prediction unit 16 that, on the basis of the wind speed for each wind speed measurement section, predicts arriving wind information, namely information of arriving wind, which is wind that will arrive at the windmill 2.
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Inventors:
KAMEYAMA SHUMPEI (JP)
KOTAKE NOBUKI (JP)
KAJIYAMA YUTAKA (JP)
SAKIMURA TAKESHI (JP)
TAKABAYASHI MIKIO (JP)
KOTAKE NOBUKI (JP)
KAJIYAMA YUTAKA (JP)
SAKIMURA TAKESHI (JP)
TAKABAYASHI MIKIO (JP)
Application Number:
PCT/JP2020/015787
Publication Date:
October 15, 2020
Filing Date:
April 08, 2020
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G01S17/95
Domestic Patent References:
| WO2017130315A1 | 2017-08-03 | |||
| WO2017175297A1 | 2017-10-12 | |||
| WO2019202676A1 | 2019-10-24 | |||
| WO2017130315A1 | 2017-08-03 |
Foreign References:
| US6320272B1 | 2001-11-20 | |||
| JP2009300425A | 2009-12-24 | |||
| EP2884306A1 | 2015-06-17 | |||
| EP1589678A1 | 2005-10-26 | |||
| JP2020002798W | 2020-01-27 |
Other References:
MIKIO TAKABAYASHI, YUTAKA KAJIYAMA, TAKESHI SAKIMURA, NOBUKI KOTAKE, TAKAYUKI YANAGISAWA: "Nacelle Mounted Doppler LIDAR Prototype for Wind Energy", MITSUBISHI DENKI GIHO - MITSUBISHI DENKI TECHNICAL REVIEW, vol. 93, no. 2, 31 January 2019 (2019-01-31), JP, pages 11 (113) - 14 (116), XP009530549, ISSN: 0369-2302
HIROSHI KAJIYAMA; YASUHIRO FUJII; HIROSHI SAKAMAKI; RIKI KOTAKE: "Doppler LIDAR System 'DIABREZZA' for Measuring Wind Condition", MITSUBISHI DENKI GIHO - MITSUBISHI DENKI TECHNICAL REVIEW, vol. 89, no. 3, March 2015 (2015-03-01), JP, pages 32 (182) - 36 (186), XP009530159, ISSN: 0369-2302
KOTAKE, NOBUKI ET AL.: "Concept of wind lidar system with the adaptive parameter tuning for various atmospheric conditions", PROCEEDINGS OF 17TH COHERENT LASER RADAR CONFERENCE, June 2013 (2013-06-01), pages 1 - 2, XP055848877, ISBN: 978-1-62993-149-4
T. ANDO ET AL.: "All-fiber coherent Doppler technologies at Mitsubishi Electric Corporation", IOP CONFERENCE SERIES: EARTH AND ENVIRONMENTAL SCIENCE, vol. 1, 2008
D. SCHLIPF ET AL.: "Field Testing of Feedforward Collective Pitch Control on the CART2 Using a Nacelle-Based Lidar Scanner", JOURNAL OF PHYSICS SCIENCE SERIES, vol. 555, 2014, pages 012090
HIROSHI KAJIYAMA; YASUHIRO FUJII; HIROSHI SAKAMAKI; RIKI KOTAKE: "Doppler LIDAR System 'DIABREZZA' for Measuring Wind Condition", MITSUBISHI DENKI GIHO - MITSUBISHI DENKI TECHNICAL REVIEW, vol. 89, no. 3, March 2015 (2015-03-01), JP, pages 32 (182) - 36 (186), XP009530159, ISSN: 0369-2302
KOTAKE, NOBUKI ET AL.: "Concept of wind lidar system with the adaptive parameter tuning for various atmospheric conditions", PROCEEDINGS OF 17TH COHERENT LASER RADAR CONFERENCE, June 2013 (2013-06-01), pages 1 - 2, XP055848877, ISBN: 978-1-62993-149-4
T. ANDO ET AL.: "All-fiber coherent Doppler technologies at Mitsubishi Electric Corporation", IOP CONFERENCE SERIES: EARTH AND ENVIRONMENTAL SCIENCE, vol. 1, 2008
D. SCHLIPF ET AL.: "Field Testing of Feedforward Collective Pitch Control on the CART2 Using a Nacelle-Based Lidar Scanner", JOURNAL OF PHYSICS SCIENCE SERIES, vol. 555, 2014, pages 012090
Attorney, Agent or Firm:
MURAKAMI, Kanako et al. (JP)
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