Wind turbines are low-speed wind turbines that have the characteristics of high power generation efficiency, simple structure, easy maintenance, and high reliability. They are suitable for agricultural, animal husbandry, and fishery areas with abundant wind resources and no conventional energy sources. They can provide stable power for users' lighting, color televisions, navigation marks, and other electrical appliances. The speed control mechanism absorbs advanced technologies at home and abroad, adopts the method of wind turbine deviation measurement tail wing speed control, which is reliable, stable, reasonably designed, structurally simple, easy to use and maintain, and has good performance.