WIND TURBINE DRIVE SYSTEM AND WIND TURBINE
    4.
    发明申请

    公开(公告)号:US20190203697A1

    公开(公告)日:2019-07-04

    申请号:US16314484

    申请日:2017-07-07

    IPC分类号: F03D15/10 F03D7/04 F16H1/22

    摘要: A wind turbine drive system includes a plurality of drive devices, a state quantity detection unit, a ring gear braking portion, and a control unit. The plurality of drive devices are provided in a first structure, and a ring gear is provided in a second structure. Each of the drive devices includes a motor drive portion and a speed reducing portion. The state quantity detection unit detects a load between a meshing portion of each of the drive devices and the ring gear. When a degree of variation in the load among the drive devices is outside a permissible range, the control unit performs a first control process of controlling the motor drive portion to prevent an increase in the degree of variation in the load and/or a second control process of controlling the ring gear braking portion.

    BEARING UNIT
    6.
    发明申请
    BEARING UNIT 审中-公开

    公开(公告)号:US20190085898A1

    公开(公告)日:2019-03-21

    申请号:US15922161

    申请日:2018-03-15

    申请人: Aktiebolaget SKF

    IPC分类号: F16C19/38 F16C33/58

    摘要: A large size bearing unit provides a rolling bearing having a first ring element and a second ring element and a plurality of rolling elements interposed radially in-between the first and the second ring elements. The first and the second ring elements rotate relative each other in relation to a rotational axle. The first ring element provides at least two separate ring elements located adjacently in a row along the rotational axle. At least one ring-formed support element is at least partly embedding the at least two separate ring elements and includes a seat surface onto which the at least two separate ring elements are located. The at least one ring-formed support element has two axially opposite surfaces extending radially from the seat surface to partly enclose the at least two separate ring elements. At least one of the axially opposite side surfaces is located on a separate ring-formed element.