Apparatus for rotating the nacelle of a wind turbine
First Claim
1. An apparatus for the controlled rotation of a nacelle of a wind turbine, having a control device and having a plurality of azimuth motors, wherein the apparatus furthermore has a plurality, amounting to n in number, of yaw brakes, wherein the control device is configured for standstill operation and for tracking operation, wherein in standstill operation, the n yaw brakes are actuated so as to impart a standstill holding moment M1 for holding the nacelle, wherein in standstill operation, the n yaw brakes impart in each case a substantially equal first holding moment, and wherein in tracking operation, the n yaw brakes are actuated so as to impart a tracking holding moment M2, wherein the tracking holding moment M2 is lower than the standstill holding moment M1 (M1>
- M2), and also lower than an overall moment generated by the azimuth motors in tracking operation, wherein the control device, in tracking operation, actuates a number m of the n yaw brakes in each case so as to generate substantially the same constant holding moment M3, wherein M1/n>
M3>
M2/n, and wherein the other (n−
m) yaw brakes are actuated in each case so as to generate substantially the same constant holding moment M4, wherein m*M3+(n−
m)*M4˜
=M2 and M1/n>
M2/n>
M4.
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Accused Products
Abstract
The present invention provides an apparatus for the controlled rotation of a nacelle of a wind turbine, which includes a control device and n of yaw brakes. In standstill operation, the n yaw brakes are actuated to impart a standstill holding moment M1 for holding the nacelle, and the n yaw brakes impart a substantially equal first holding moment. In tracking operation, the n yaw brakes are actuated to impart a tracking holding moment, M2, which is lower than the standstill holding moment M1 (M1>M2). The control device, in tracking operation, actuates a number m of the n yaw brakes to generate substantially the same constant holding moment M3, where M1/n>M3>M2/n, and where the other (n−m) yaw brakes are actuated to generate substantially the same constant holding moment M4, where m*M3+(n−m)*M4˜=M2, and M1/n>M2/n>M4.
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Citations
12 Claims
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1. An apparatus for the controlled rotation of a nacelle of a wind turbine, having a control device and having a plurality of azimuth motors, wherein the apparatus furthermore has a plurality, amounting to n in number, of yaw brakes, wherein the control device is configured for standstill operation and for tracking operation, wherein in standstill operation, the n yaw brakes are actuated so as to impart a standstill holding moment M1 for holding the nacelle, wherein in standstill operation, the n yaw brakes impart in each case a substantially equal first holding moment, and wherein in tracking operation, the n yaw brakes are actuated so as to impart a tracking holding moment M2, wherein the tracking holding moment M2 is lower than the standstill holding moment M1 (M1>
- M2), and also lower than an overall moment generated by the azimuth motors in tracking operation, wherein the control device, in tracking operation, actuates a number m of the n yaw brakes in each case so as to generate substantially the same constant holding moment M3, wherein M1/n>
M3>
M2/n, and wherein the other (n−
m) yaw brakes are actuated in each case so as to generate substantially the same constant holding moment M4, wherein m*M3+(n−
m)*M4˜
=M2 and M1/n>
M2/n>
M4. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- M2), and also lower than an overall moment generated by the azimuth motors in tracking operation, wherein the control device, in tracking operation, actuates a number m of the n yaw brakes in each case so as to generate substantially the same constant holding moment M3, wherein M1/n>
Specification