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公开(公告)号：US11454211B2
公开(公告)日：2022-09-27
申请号：US15983933
申请日：2018-05-18
Applicant: Liebherr-Components Biberach GmbH
Inventor： Johannes Müller , Martin Dahl , Oliver Wennheller , Clemens Christ , Oliver Fenker
Abstract: The present invention relates to adjustment and/or drive units which can be used in wind power plants for adjusting the azimuth angle of the nacelle of the wind power plant or the pitch angle of the rotor blades, wherein such an adjustment and/or drive unit has at least two adjusting drives for rotating two assemblies which are mounted so as to be rotatable relative to each other, and has a control device for controlling the adjusting drives. The control device controls the adjusting drives in such a manner that the adjusting drives are braced relative to each other during the rotation of the two assemblies and/or when the assemblies are at standstill. The invention further relates to a wind power plant comprising such an adjustment and/or drive unit, and to a method for controlling such an adjustment and/or drive unit. According to the invention, the control device comprises a bracing-adjustment device for variably adjusting the intensity of the bracing of the adjusting drives as a function of a variable external load on the assemblies being adjusted, wherein the intensity can be determined by means of a load determining device. According to another aspect of the invention, an overload protection is included, wherein the individual loads of the individual adjusting drives are determined by load determining devices and, in the event that an adjusting drive reaches overload, the distribution of the drive torques is modified in such a manner that the adjusting drive reaching overload is relieved or at least not further loaded, and at least one further adjusting drive is more heavily loaded in a supporting manner or is less heavily loaded in a bracing manner.
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公开(公告)号：US20150152842A1
公开(公告)日：2015-06-04
申请号：US14413818
申请日：2013-07-10
Applicant: Liebherr-Components Biberach GmbH
Inventor： Anton Gaile , Anton Staimer , Oliver Wennheller , Hans-Peter Lavergne
CPC classification number: F03D7/0224 , F03D9/25 , F03D9/28 , F03D80/88 , F05B2210/11 , F05B2270/604 , F15B1/022 , F15B15/18 , F15B15/261 , F15B2015/268 , F15B2211/20515 , F15B2211/20576 , F15B2211/212 , F15B2211/3051 , F15B2211/411 , F15B2211/41554 , F15B2211/41563 , F15B2211/426 , F15B2211/7053 , F15B2211/7054 , F15B2211/8752 , Y02E10/721 , Y02E10/723
Abstract: The invention relates to a wind energy system with at least one pitch adjustment system for adjusting the pitch of at least one rotor blade of the wind energy system, wherein the pitch adjustment system comprises at least one electrohydraulic drive that comprises an unregulated electromotor rotating in one direction of rotation for generating pressure.
Abstract translation: 本发明涉及一种具有至少一个俯仰调节系统的风能系统，用于调节风能系统的至少一个转子叶片的桨距，其中，俯仰调节系统包括至少一个电动液压驱动器，其包括在一个中旋转的不受调节的电动机 产生压力的旋转方向。
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公开(公告)号：US11280316B2
公开(公告)日：2022-03-22
申请号：US16461773
申请日：2017-11-17
Applicant: Liebherr-Components Biberach GmbH
Inventor： Johannes Müller , Martin Dahl , Oliver Wennheller , Clemens Christ , Oliver Fenker
Abstract: Adjustment and/or drive units that can be used in wind turbines to set the azimuth angle of the wind turbine nacelle or the pitch angle of the rotor blades, wherein such an adjustment and/or drive unit has at least two actuating drives for rotating two assemblies, which are mounted for rotation relative to each other, and has a control device for controlling the actuating drives, which control device controls the actuating drives in such a way that the actuating drives are braced in relation to each other during the rotation of the two assemblies and/or at a standstill of the assemblies. The invention further relates to a wind turbine having such an adjustment and/or drive unit and to a method for controlling such an adjustment and/or drive unit.
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公开(公告)号：US09890767B2
公开(公告)日：2018-02-13
申请号：US14413818
申请日：2013-07-10
Applicant: Liebherr-Components Biberach GmbH
Inventor： Anton Gaile , Anton Staimer , Oliver Wennheller , Hans-Peter Lavergne
CPC classification number: F03D7/0224 , F03D9/25 , F03D9/28 , F03D80/88 , F05B2210/11 , F05B2270/604 , F15B1/022 , F15B15/18 , F15B15/261 , F15B2015/268 , F15B2211/20515 , F15B2211/20576 , F15B2211/212 , F15B2211/3051 , F15B2211/411 , F15B2211/41554 , F15B2211/41563 , F15B2211/426 , F15B2211/7053 , F15B2211/7054 , F15B2211/8752 , Y02E10/721 , Y02E10/723
Abstract: The invention relates to a wind energy system with at least one pitch adjustment system for adjusting the pitch of at least one rotor blade of the wind energy system, wherein the pitch adjustment system comprises at least one electrohydraulic drive that comprises an unregulated electromotor rotating in one direction of rotation for generating pressure.
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