The Design And Research Of The Yaw Control System For MW Rated Wind Turbine

Wind energy is a green energy. Wind power generation rapidly develop all over the world because it is beneficial to energy developing and environment improving. Wind power will fleetly develop in China, too. For the sake of improving the efficiency of wind energy and increasing the life of the mechanical part, all kinds of research for WTGS will widely develop in many countries, many kinds of control arithmetic and strategy for WTGS have been advanced. But mass of them focused on blades control, power generation control and merging control, the technology for yaw system wasn't still developed for a long time. Therefore, aim at this subject, related research and design will be reported in this thesis.Whether it is pitch system or yaw system, it is of great importance for improving the efficiency of using wind energy. For the yaw system, it must control the cabin always windward. Because the wind direction is always ceaselessly changed, the yaw control system has already became...