Title:
WINDMILL PITCH CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/002265
Kind Code:
A1
Abstract:
Provided is a windmill pitch control device capable of performing feathering and also continuously generating power even if an ordinary power source loses the ability to supply power. A pitch controller (50) transmits a control signal for pitch control which controls the charging and discharging of an accumulator (12) and also alters the pitch angle of a blade (104), and a motor controller (13) controls an electric motor (11) in accordance with the control signal from the pitch controller (50). An accumulator operation monitoring section (15) monitors the operation state of the accumulator (12). The motor controller (13) supplies power by being connected to an ordinary power source (111), and if the ordinary power source (111) loses the ability to supply power, the motor controller (13) uses power supplied from the accumulator (12) to control the electric motor (11) in accordance with the control signal and thereby continues pitch control. Control which alters the pitch angle of the blade (104) in the direction in which wind pressure decreases is performed in accordance with the monitoring result of the accumulator operation monitoring section (15).
Inventors:
HIBINO,Toshiharu (NABTESCO CORPORATION 1414, Goshono, Tarui-ch, Fuwa-gun Gifu 21, 〒5032121, JP)
日比野敏晴 (〒21 岐阜県不破郡垂井町御所野１４１４ナブテスコ株式会社垂井工場内 Gifu, 〒5032121, JP)
日比野敏晴 (〒21 岐阜県不破郡垂井町御所野１４１４ナブテスコ株式会社垂井工場内 Gifu, 〒5032121, JP)
Application Number:
JP2011/064510
Publication Date:
January 05, 2012
Filing Date:
June 24, 2011
Export Citation:
Assignee:
NABTESCO CORPORATION (7-9 Hirakawacho 2-chome, Chiyoda-ku Tokyo, 93, 〒1020093, JP)
ナブテスコ株式会社 (〒93 東京都千代田区平河町二丁目７番９号 Tokyo, 〒1020093, JP)
HIBINO,Toshiharu (NABTESCO CORPORATION 1414, Goshono, Tarui-ch, Fuwa-gun Gifu 21, 〒5032121, JP)
ナブテスコ株式会社 (〒93 東京都千代田区平河町二丁目７番９号 Tokyo, 〒1020093, JP)
HIBINO,Toshiharu (NABTESCO CORPORATION 1414, Goshono, Tarui-ch, Fuwa-gun Gifu 21, 〒5032121, JP)
International Classes:
F03D7/04; F03D9/02
Attorney, Agent or Firm:
ONEDEE IP PARTNERS (Shin-Osaka Ikushima Bldg, 1-3 Miyahara 5-chome, Yodogawa-k, Osaka-shi Osaka 03, 〒5320003, JP)
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Claims: