Yaw control system of wind driven generator

The utility model discloses a yaw control system of a wind driven generator. The system comprises a wind speed anemoscope, an engine room position detection device, a main controller, at least one yaw motor and a yaw frequency converter, wherein the wind speed anemoscope is used for detecting the current wind direction; the engine room position detection device is used for detecting the current position of an engine room; the main controller is used for calculating an engine room yaw expected value according to the acquired engine room yaw expected value information and the current position information and then generating a control instruction; the at least one yaw motor is used for driving the engine room to rotate, and the yaw frequency converter is used for acquiring the control instruction to control the action of the yaw motor; and the yaw frequency converter is respectively connected with the main controller and each yaw motor, and the main controller is respectively connected with the wind speed anemoscope and the engine room position detection device. By using the frequency converter to control the yaw motors, the setting and control on the yaw speed can be realized, so that the fan can be better controlled and the impulse current of the motor can be buffered in the starting and stopping state of yaw actions.