VERTICAL AXIAL WIND-DRIVEN POWER PLANT Russian patent published in 2015 - IPC F03D3/00 F03D3/06 

FIELD: power industry.

SUBSTANCE: vertical axial wind-driven power plant includes a rotor comprising a number of vertical blades rotating about the vertical axis and a hub located in the centre of rotation, in which an electric generator is arranged. A stator is enclosed in a cylindrical cavity of the rotor of the electric generator, which is made from non-magnetic material and installed coaxially to the longitudinal axis of the stator with a possibility of rotation about it. Stator slots in which winding coils fixed by wedges are laid are arranged on its outer side and open to the surface of the cylindrical cavity of the electric generator rotor, which faces to them. The stator housing has a hole coaxial to its longitudinal axis, with which it is put on the hub. Ring-shaped end shields of the electric generator are fixed on upper and lower edges of the hub. The inner surface of the rotor cavity, which faces to the stator, is provided with an annular projection with a slot. An induction coil is mounted in the slot and contains planks of constant magnets with formation of a multiple-piece magnetic ring, which are oriented along the longitudinal axis of the electric generator rotor. Planks are magnetised and have a possibility of formation of a Halbach magnetic circuit. The outer surface of the multiple-piece magnetic ring is borne against the slot bottom of the annular projection of the electric generator rotor. A bearing assembly of the electric generator includes magnetic radial bearings arranged in gaps between edges of the end shields of the electric generator and surfaces of the electric generator rotor, which face to them. Vertical blades are rigidly attached to the rotor containing the cylindrical shaft, from which there branched radially in a horizontal plane are power traverses enclosed in aerodynamic fairings. Vertical blades are fixed on ends of the traverses. Contact points of power traverses to vertical blades are connected to the cylindrical shaft by braces enclosed in aerodynamic fairings. The cylindrical shaft is passed with a possibility of rotation through an elastic bush fixed in a guide bush rigidly fixed on the end face of a vertical mast. The hub is oriented horizontally and rigidly attached to the mast below the guide bush. The elastic bush includes the first cylindrical hollow insert from non-magnetic material. The cylindrical shaft in the section of passage through the guide bush is provided with the second hollow non-magnetic insert rigidly attached to it. In the gap between the first and the second hollow non-magnetic inserts there placed is a radial magnetic bearing. The elastic bush includes a washer from elastic material from which flanges of the non-magnetic bush are supported. In the gap between the support vertical journal and flanges of the non-magnetic bush there arranged is a magnetic thrust bearing.

EFFECT: improvement of operating reliability and sufficient reduction of friction in bearings.

2 cl, 6 dwg