Wind energy, as a clean and renewable energy, has been paid more and more attention to in all over the world. With huge storage, the wind energy available in the world is 2×107MW, 10 times more than the total volume of the water energy on the earth. As the increasing shortage of energy, how to use wind for power generation has been gradually put on the national agenda. China, in the promotion of wind energy technology in the west regions where rich wind resources exists, has built many wind power stations already.