Five-freedom full suspension vertical shaft disc type wind-driven generator

Abstract

The invention relates to a five-freedom full suspension vertical shaft disc type wind-driven generator. The wind-driven generator comprises a first generator stator installed on the inner wall of a shell, a second generator stator, a permanent magnet offsetting type axial magnetic suspending bearing stator A and a permanent magnet offsetting type axial magnetic suspension bearing stator B, wherein a main shaft is provided with a first generator rotor A, a first generator rotor B, a permanent magnet offsetting type axial magnetic suspension bearing rotor, a second generator rotor A and a second generator rotor B; and the two ends of the main shaft extend out from the two ends of the shell, and are respectively installed with a fan blade and a displacement sensor. The wind-driven generator provided by the invention utilizes two permanent magnet type axial magnetic suspending bearings to realize the suspension of the rotor on four axial freedoms, and utilizes a permanent magnet offsetting type axial magnetic suspending bearing to realize the suspension of the rotor on the axial freedom, so that the full suspension of the rotor is realized, the cut-in wind speed is reduced, the structure of a magnetic suspending bearing system of the wind-driven generator is simplified, and the efficiency of energy conversion is improved.

Description

technical field [0001] The invention relates to a vertical shaft disc wind power generator, in particular to a five-degree-of-freedom full-suspension vertical shaft disc wind power generator, which belongs to the technical field of wind power generation. Background technique [0002] The principle of wind power generation is to use wind power to drive the generator rotor to rotate to generate electric energy. By comparing different power generation methods, it can be found that wind power generation is green power in a complete sense-no pollution, renewable, and inexhaustible. The global wind energy reserves are huge, about 2.74×10 9 MW. Available wind energy is about 2×10 7 MW, about 10 times the total amount of water energy that can be developed on the earth. my country is rich in wind energy resources, and the wind energy reserves that can be developed and utilized are about 1×10 9 kW, of which, the wind energy storage on land is about 2.53×10 8 kW (at a height of 10...

AI Technical Summary

Problems solved by technology

[0005] In the existing all-permanent-magnet maglev wind turbines, the rotor of the wind turbine cannot be suspended in all five degrees of freedom, so the mechanical friction between the rotating part and the non-rotating part of the fan has not been completely eliminated, and further Reduce cut-in wind speed

[0006] In order to realize the five-degree-of-freedom suspension of the wind turbine rotor, the support system adopted must have active magnetic suspension bearings. If the electromagnetic bias type magnetic suspension bearing is used, it will bring a large energy loss. In addition, If active magnetic bearings are used in multiple degrees of freedom, the scale of the control system will be increased, resulting in higher use and operating costs of the magnetic bearing system

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