Concave porous energy-increasing device for wind turbine

The invention discloses a concave porous energy-increasing device for a wind turbine. The concave porous energy-increasing device for the wind turbine comprises a porous flow guide plate (1), a base (2) used for supporting or moving the porous flow guide plate (1), and a support (3), wherein the porous flow guide plate (1) is of an axisymmetric structure; the porous flow guide plate (1) comprisesa main plate (4) at the middle and auxiliary plates (5) at the two sides; holes (6) are distributed in the main plate (4) and the auxiliary plates (5); the main plate (4) is parallel to a rotary planeof the wind turbine; a distance between the main plate (4) and the rotary plane of the wind turbine is 0-7 times of the height of the middle of the main plate; and each auxiliary plate (5) forms an included angle of 0-90 degrees with the rotary plane of the wind turbine, and gradually contracts in the main flow direction of air. According to the concave porous energy-increasing device for the wind turbine, low-speed wind