Rotational positioning system in a wind turbine
AssigneeVestas Wind Systems A/S
InventorsPaw Rosenvard, Michele Lucente
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Abstract
A rotational positioning system in a wind turbine is provided that comprises a driven part, a plurality of positioning drives coupled to the driven part, a plurality of sensors each arranged to sense a load parameter indicative of the load of the respective positioning drive, and a load controller connected to the plurality of sensors. The load controller is arranged to determine a load of a respective positioning drive based on the sensed load parameter, to compare said load with an expected load value, and to output a signal indicative of a failure of the respective positioning drive in response to the load being smaller than the expected load value.
Claims14
A rotational positioning system in a wind turbine, comprising:
- a driven part;
- a plurality of positioning drives coupled to the driven part;
- a plurality of sensors each arranged to sense a load parameter indicative of a load of the respective positioning drive;
- and
- a load controller connected to the plurality of sensors, and arranged to determine the load of the respective positioning drive based on the sensed load parameter, to compare said load with an expected load value, and to output a signal indicative of a failure of the respective positioning drive in response to the load being smaller than the expected load value.
A method of rotationally positioning a driven part in a wind turbine, comprising:
- driving the driven part by means of a plurality of positioning drives;
- sensing a load parameter indicative of a load of a respective positioning drive;
- determining the load of the respective positioning drive based on the sensed load parameter;
- comparing said load with an expected load value;
- and
- outputting a signal indicative of a failure of the respective positioning drive in response to the load being smaller than the expected load value.
Dependencies are inferred from the claim text.