| 摘要 |
PURPOSE: A yaw drive control method is provided to properly control the yawing the aerogenerator in order to forestall yaw errors and prevent a cable from being twisted, thereby minimizing power loss and maximizing energy efficiency. CONSTITUTION: A yaw drive control method is to stop the generation of electricity by stopping a turbine operating for the generation, and to untwist a twisted cable by rotating a nacelle(20) when a wind speed is below a certain level. An aerogenerator comprises the nacelle, a tower, and a rotor(40). After the twisted cable is untwisted by the rotation of the nacelle, the nacelle rotates in order to place the rotor in the windward direction. The wind speed below the certain level is under a minimum wind speed in which the aerogenetor is operable. The nacelle is rotated by power supply from a system power source. When the stopped turbine operates again for the generation, the initial power for the reoperation of the turbine is supplied from the system power source. After the reoperation of the turbine, power is supplied from the system power source or the turbine in order to control the aerogenerator of which the yawing is controlled. [Reference numerals] (a) Stopping the generation; (AA,BB) Less than the minimum wind velocity for enabling the generation of an aerogenerator; (b) Waiting for generation after untwisting a cable; (c) Restarting the generation; (CC) Equal to or greater than the minimum wind velocity for enabling the generation of the aerogenerator |
