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US 7,948,100 B2Granted
Braking and positioning system for a wind turbine rotor
AssigneeGeneral Electric Company
InventorsJacob Johannes Nies, Hartmut Scholte-Wassink
Life of this patent
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Abstract
A method of positioning a wind turbine rotor comprises defining a predetermined angular position in a main rotation plane of the rotor and controlling a rate of deceleration of the rotor, such as to stop the rotor at the predetermined angular position.
Claims20
A method of positioning a wind turbine rotor, the method comprising:
- defining a predetermined angular position in a main rotation plane of the rotor;
- and
- stopping the rotor at the predetermined angular position by controlling a rate of deceleration of the rotor,
- wherein the angular position and rotational speed of the rotor are monitored during deceleration, an estimated standstill position is calculated, a deviation of the estimated standstill position from the predetermined angular position is determined, and the rate of deceleration is adapted depending on the determined deviation.
1 more element
A method of positioning a wind turbine rotor, the method comprising:
- defining a predetermined angular position in a main rotation plane of the rotor;
- and
- stopping the rotor at the predetermined angular position by controlling a rate of deceleration of the rotor,
- wherein the controlling the rate of deceleration of the rotor comprises detecting an angular position of the rotor at a specific time, calculating a deviation from a previously calculated target value at this time, and adapting the rate of deceleration as a function of the deviation.
1 more element
Dependencies are inferred from the claim text.