System and method for controlling a power output of a wind turbine generator
First Claim
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1. A method for controlling the power output of a wind turbine comprising a transformer, the method including:
- a) sensing a voltage of the transformer during operation of the wind turbine, the transformer comprising a plurality of taps;
b) determining a reactive power of the wind turbine; and
c) maintaining a set value of the reactive power by alternating between the plurality of taps on the transformer so as to control an output voltage of the transformer.
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Abstract
A method for controlling the power output of a wind turbine, which includes a transformer with multiple taps, is provided. The method includes sensing a voltage of the transformer during operation of the wind turbine, determining the reactive power, and automatically maintaining a set value of the reactive power by controlling the output voltage of the transformer.
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Citations
17 Claims
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1. A method for controlling the power output of a wind turbine comprising a transformer, the method including:
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a) sensing a voltage of the transformer during operation of the wind turbine, the transformer comprising a plurality of taps; b) determining a reactive power of the wind turbine; and c) maintaining a set value of the reactive power by alternating between the plurality of taps on the transformer so as to control an output voltage of the transformer. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for controlling the reactive power of a wind turbine having a transformer with a plurality of taps, comprising:
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a) detecting an amount of a volt-ampere reactive power delivered or consumed by the wind turbine, or determining a value and sign of phi; and b) controlling an output voltage of the transformer of the wind turbine by alternating between the plurality of taps on the transformer in order to maintain a defined sign and value of phi or a defined volt-ampere reactive power. - View Dependent Claims (9)
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10. A control system for controlling the reactive power of a wind turbine, comprising:
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a) a controller; b) a transformer comprising a plurality of taps delivering differing voltages during operation of the transformer; c) one or more sensors configured to sense a voltage of the transformer during operation of the wind turbine; and d) a tap changing mechanism controlled by the controller, the tap changing mechanism configured to maintain a set value of the reactive power by alternating between the plurality of taps on the transformer so as to control an output voltage of the transformer. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A wind turbine having a control system for controlling the reactive power, the wind turbine comprising:
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a) a tower; b) a nacelle; c) a rotor mounted to the nacelle; d) a generator located in the nacelle; e) a controller; f) a transformer comprising a plurality of taps delivering differing voltages during operation of the transformer; g) one or more sensors configured to sense a voltage of the transformer during operation of the wind turbine; and h) a tap changing mechanism controlled by the controller, the tap changing mechanism configured to maintain a set value of the reactive power by alternating between the plurality of taps on the transformer so as to control an output voltage of the transformer.
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Specification