Invention Grant
- Patent Title: Wind turbine generator and tidal current generator and operation method thereof
- Patent Title (中): 风力发电机和潮汐发电机及其运行方法
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Application No.: US12999123Application Date: 2010-11-30
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Publication No.: US08450868B2Publication Date: 2013-05-28
- Inventor: Kazuhisa Tsutsumi , Masayuki Shimizu , Niall Caldwell , Daniil Dumnov , Stephen Laird , Venkata Pappala
- Applicant: Kazuhisa Tsutsumi , Masayuki Shimizu , Niall Caldwell , Daniil Dumnov , Stephen Laird , Venkata Pappala
- Applicant Address: JP Tokyo
- Assignee: Mitsubishi Heavy Industries, Ltd.
- Current Assignee: Mitsubishi Heavy Industries, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Lowe Hauptman Ham & Berner, LLP
- International Application: PCT/JP2010/006982 WO 20101130
- International Announcement: WO2012/073281 WO 20120607
- Main IPC: F03D9/00
- IPC: F03D9/00

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.
Public/Granted literature
- US20120104752A1 WIND TURBINE GENERATOR AND TIDAL CURRENT GENERATOR AND OPERATION METHOD THEREOF Public/Granted day:2012-05-03
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