| 摘要 |
The invention relates to an apparatus for the controlled rotation of a machine pod (102) of a wind power plant, having a control device (400) and having a plurality of azimuth motors (128), wherein the apparatus furthermore has a plurality, amounting to n in number, of yaw brakes (130, B, B1 - B8), wherein the control device (400) is designed for standstill operation and for tracking operation, wherein in standstill operation, the n yaw brakes (130, B, B1 - B8) are actuated so as to impart a standstill holding moment M1 for holding the machine pod (102), wherein here, the n yaw brakes (130, B, B1 - B8) impart in each case a substantially equal first holding moment, and wherein in tracking operation, the n yaw brakes (130, B, B1 - B8) 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 is also lower than the overall moment generated by the azimuth motors (128) in tracking operation, and is characterized in that the control device (400), in tracking operation, actuates a number m of the n yaw brakes (130, B, B1 - B8) 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 (130, B, B1 - B8) 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. |
