Title:
WIND TURBINE GENERATOR OR TIDAL CURRENT GENERATOR AND OPERATION METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2012/073281
Kind Code:
A1
Abstract:
An object of the invention is to provide a wind turbine generator or a tidal current generator which is equipped with a hydraulic transmission and achieves a superior power generation efficiency, and a operation method thereof. The wind turbine generator 1 comprises a hydraulic pump 12 of a variable displacement type which is rotated by the main shaft 8, a hydraulic motor 14 of a variable displacement type which is connected to the generator 20, and a high pressure oil line 16 and a low pressure oil line 18 which are arranged between the hydraulic pump 12 and the hydraulic motor 14. The pump controller 32 obtains a target torque of the hydraulic pump 12 at which a power coefficient becomes maximum, and then sets a displacement Dp of the hydraulic pump 12 based on the target torque and the pressure in the high pressure oil line 16. The motor controller 34 sets a displacement Dm of the hydraulic pump 14 based on a discharge amount Qp of the hydraulic pump obtained from the displacement Dp of the hydraulic pump 12 so that the rotation seed of the generator 20 becomes constant.
Inventors:
TSUTSUMI KAZUHISA (JP)
SHIMIZU MASAYUKI (JP)
CALDWELL NIALL (GB)
DUMNOV DANIIL (GB)
LAIRD STEPHEN (GB)
PAPPALA VENKATA (GB)
SHIMIZU MASAYUKI (JP)
CALDWELL NIALL (GB)
DUMNOV DANIIL (GB)
LAIRD STEPHEN (GB)
PAPPALA VENKATA (GB)
Application Number:
PCT/JP2010/006982
Publication Date:
June 07, 2012
Filing Date:
November 30, 2010
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
TSUTSUMI KAZUHISA (JP)
SHIMIZU MASAYUKI (JP)
CALDWELL NIALL (GB)
DUMNOV DANIIL (GB)
LAIRD STEPHEN (GB)
PAPPALA VENKATA (GB)
TSUTSUMI KAZUHISA (JP)
SHIMIZU MASAYUKI (JP)
CALDWELL NIALL (GB)
DUMNOV DANIIL (GB)
LAIRD STEPHEN (GB)
PAPPALA VENKATA (GB)
International Classes:
F03D11/02; F03D9/00; F03D9/02; F03D11/00
Domestic Patent References:
| WO2009058022A1 | 2009-05-07 |
Foreign References:
| US20070024058A1 | 2007-02-01 | |||
| EP0020207A1 | 1980-12-10 | |||
| US20100207398A1 | 2010-08-19 | |||
| US20090273186A1 | 2009-11-05 | |||
| EP2151574A2 | 2010-02-10 | |||
| US20100032959A1 | 2010-02-11 | |||
| US20100040470A1 | 2010-02-18 | |||
| US7436086B2 | 2008-10-14 |
Attorney, Agent or Firm:
TAKAHASHI, MATSUMOTO & PARTNERS INTELLECTUAL PROPERTY CORP. (Ambassador Roppongi Buildings 16-13, Roppongi 3-chome, Minato-k, Tokyo 32, JP)
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Claims: