Abstract:Control technology is the key unit of efficient and stable operation for the wind power system, the yaw system is an important controlling part of the horizontal axis wind-driven generator system. To address the impact by uncertainty wind on the fan, this article use the fuzzy logic control technology to make sure that wind generators accurately track the wind direction and change is always consistent for maximum capture of wind energy control strategies. Fans of the untwisting and 90 degrees crosswind design ideas and specific control flow chart are put forward in order to avoid winding cable or hanged during yaw, also, protect the fan from the strong wind weather. The results show that the existence of the yaw system can make the wind turbines work smoothly and reliably, use the wind energy efficiently. This approach is consistent with the yaw control of the system requirements.