Wind turbine and method of operating a wind turbine
First Claim
1. A method of operating a wind turbine including a rotor, a multi winding generator having a plurality of independent sets of control windings and a plurality of independent power electronic converters for controlling each set of control windings independently,the method comprising:
- in a normal operation mode, the plurality of power electronic converters controlling the sets of control windings in substantially the same way, andin a positioning mode for positioning a rotor of a wind turbine in one of one or more predetermined angular positions, one of the independent power electronic converters controlling its corresponding set of control windings in a substantially different manner than at least one other independent power electric converter, whereinin the positioning mode, one or more of the power electronic converters generates a torque in its corresponding set of control windings to substantially compensate for an instantaneous aerodynamic torque, and at least one of the other power electronic converters generates a forward torque in its corresponding set of control windings.
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Accused Products
Abstract
A method of operating a wind turbine comprising a rotor, a multi winding generator having a plurality of independent sets of control windings and a plurality of independent power electronic converters for controlling each set of control windings independently, the method comprising in a normal operation mode, the plurality of power electronic converters controlling the sets of control windings in substantially the same way, whereas in a positioning mode for positioning a rotor of a wind turbine in one of one or more predetermined angular positions, one of the independent power electronic converters controlling its corresponding set of control windings in a substantially different manner than at least one other independent power electric converter. The invention further relates to a wind turbine adapted to work in at least two different operating modes.
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Citations
9 Claims
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1. A method of operating a wind turbine including a rotor, a multi winding generator having a plurality of independent sets of control windings and a plurality of independent power electronic converters for controlling each set of control windings independently,
the method comprising: -
in a normal operation mode, the plurality of power electronic converters controlling the sets of control windings in substantially the same way, and in a positioning mode for positioning a rotor of a wind turbine in one of one or more predetermined angular positions, one of the independent power electronic converters controlling its corresponding set of control windings in a substantially different manner than at least one other independent power electric converter, wherein in the positioning mode, one or more of the power electronic converters generates a torque in its corresponding set of control windings to substantially compensate for an instantaneous aerodynamic torque, and at least one of the other power electronic converters generates a forward torque in its corresponding set of control windings. - View Dependent Claims (2, 3)
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4. A wind turbine, comprising:
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a rotor, a multi winding generator having a plurality of independent sets of control windings, and a plurality of independent power electronic converters for controlling each set of control windings independently, wherein the generator and independent power electronic converters are adapted to work in at least two different operational modes, and wherein in at least a first operational mode, the independent power electronic converters all operate in substantially the same way, and in at least a second operational mode, the independent power electronic converters do not all operate in substantially the same way, wherein the second operational mode is a positioning mode for positioning a rotor in one of one or more predefined angular positions, and wherein in the positioning mode one or more of the power electronic converters generates a torque in its corresponding set of control windings to substantially compensate for an instantaneous aerodynamic torque, and at least one of the other power electronic converters generates a rearward torque in its corresponding set of control windings. - View Dependent Claims (5, 6, 7, 8)
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9. A method of operating a wind turbine including a rotor, a multi winding generator having a plurality of independent sets of control windings and a plurality of independent power electronic converters for controlling each set of control windings independently,
the method comprising: -
in a normal operation mode, the plurality of power electronic converters controlling the sets of control windings in substantially the same way, and in a positioning mode for positioning a rotor of a wind turbine in one of one or more predetermined angular positions, one of the independent power electronic converters controlling its corresponding set of control windings in a substantially different manner than at least one other independent power electric converter, and wherein in the positioning mode, the generator is driven as a motor.
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Specification