Invention Grant
- Patent Title: Wind turbine drive system and wind turbine
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Application No.: US16314480Application Date: 2017-07-07
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Publication No.: US11619208B2Publication Date: 2023-04-04
- Inventor: Osamu Nohara , Haruna Osako
- Applicant: NABTESCO CORPORATION
- Applicant Address: JP Tokyo
- Assignee: NABTESCO CORPORATION
- Current Assignee: NABTESCO CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Pillsbury Winthrop Shaw Pittman, LLP
- Priority: JPJP2016-135953 20160708
- International Application: PCT/JP2017/025028 WO 20170707
- International Announcement: WO2018/008754 WO 20180111
- Main IPC: F03D15/00
- IPC: F03D15/00 ; F16H1/22 ; F03D7/02 ; F03D7/04

Abstract:
A wind turbine drive system includes a plurality of drive devices, a state quantity detection unit, and a control unit. The plurality of drive devices are provided in a first structure (a nacelle), and a ring gear is provided in a second structure (a tower). Each of the drive devices includes a motor drive portion, a speed reducing portion, and a motor braking portion for braking the motor drive portion. The state quantity detection unit detects a load between a meshing portion of each of the drive devices and the ring gear. Based on the thus detected load for the each of the drive devices, the control unit controls at least one of the motor drive portion and the motor braking portion so as to reduce a degree of variation in the load among the drive devices.
Public/Granted literature
- US20190186468A1 WIND TURBINE DRIVE SYSTEM AND WIND TURBINE Public/Granted day:2019-06-20
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