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US 11,815,370 B2Granted
Determination of wind turbine generator position
AssigneeVestas Wind Systems A/S
InventorsKent Tange, Daniel De Figueiredo Maria
Life of this patent
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Abstract
A method for determining angular position of a generator shaft of a wind turbine is presented. The method includes receiving a position signal, from an encoder position sensor of the wind turbine, indicative of an angular position of the generator shaft. The method includes determining a compensation signal to compensate for a disturbance signal in the received position signal indicative of an imperfection associated with the encoder position sensor. The method includes modifying the position signal by applying the determined compensation signal to the received position signal to determine angular position.
Claims12
A method for determining angular position of a generator shaft of a wind turbine, the method comprising:
- receiving a position signal, from an encoder position sensor of the wind turbine, indicative of an angular position of the generator shaft;
- determining a position component of the position signal by (i) identifying a sine position component in the position signal and (ii) identifying a cosine position component in the position signal;
- determining a speed signal based on the position signal;
- determining, in the speed signal, a speed component associated with a disturbance signal in the position signal and indicative of an imperfection associated with the encoder position sensor;
- determining a gain by (i) determining a sine component gain which comprises multiplying the sine position component and the speed component and (ii) determining a cosine component gain which comprises multiplying the cosine position component and the speed component;
- determining, by a processor, a compensation signal with the determined gain to compensate for the disturbance signal;
- modifying, by the processor, the position signal by applying the determined compensation signal to the received position signal to determine angular position;
- and
- adjusting a current from a converter of the wind turbine or a pitch angle of a rotor blade of the wind turbine based on the determined angular position.
6 more elements
A controller for a wind turbine, the controller being configured to:
- receive a position signal, from an encoder position sensor of the wind turbine, indicative of an angular position of a generator shaft of the wind turbine;
- determine a position component of the position signal by (i) identifying a sine position component in the position signal and (ii) identifying a cosine position component in the position signal;
- determine a speed signal based on the position signal;
- determine, in the speed signal, a speed component associated with a disturbance signal in the position signal and indicative of an imperfection associated with the encoder position sensor;
- determine a gain by (i) determining a sine component gain which comprises multiplying the sine position component and the speed component and (ii) determining a cosine component gain which comprises multiplying the cosine position component and the speed component;
- determine a compensation signal with the determined gain to compensate for the disturbance signal;
- modify the position signal by applying the determined compensation signal to the received position signal to determine angular position of the generator shaft;
- and
- adjust a current from a converter of the wind turbine or a pitch angle of a rotor blade of the wind turbine based on the determined angular position.
6 more elements
A wind turbine comprising:
- a tower;
- a nacelle disposed on the tower;
- a rotor extending from the nacelle and having a plurality of blades disposed thereon;
- and
- a controller being configured to:
- receive a position signal, from an encoder position sensor of the wind turbine, indicative of an angular position of a generator shaft of the wind turbine;
- determine a position component of the position signal by (i) identifying a sine position component in the position signal and (ii) identifying a cosine position component in the position signal;
- determine a speed signal based on the position signal;
- determine, in the speed signal, a speed component associated with a disturbance signal in the position signal and indicative of an imperfection associated with the encoder position sensor;
- determine a gain by (i) determining a sine component gain which comprises multiplying the sine position component and the speed component and (ii) determining a cosine component gain which comprises multiplying the cosine position component and the speed component;
- determine a compensation signal with the determined gain to compensate for the disturbance signal;
- modify the position signal by applying the determined compensation signal to the received position signal to determine angular position of the generator shaft;
- and
- adjust a current from a converter of the wind turbine or a pitch angle of a rotor blade of the wind turbine based on the determined angular position.
11 more elements
Dependencies are inferred from the claim text.