Adjustment and/or drive unit, wind power plant having such an adjustment and/or drive unit, and method for controlling such an adjustment and/or drive unit

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United States of America Patent

PATENT NO 11454211
APP PUB NO 20180372071A1
SERIAL NO

15983933

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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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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Patent Owner(s)

Patent OwnerAddress
LIEBHERR-COMPONENTS BIBERACH GMBH88400 BIBERACH/RISS

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Christ, Clemens Biberach, DE 5 15
Dahl, Martin Wettingen, CH 26 188
Fenker, Oliver Warthausen, DE 19 166
Müller, Johannes Buttenwiesen, DE 21 28
Wennheller, Oliver Leutkirch, DE 3 14

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