Novel inner rotor five-freedom-degree magnetic suspension vertical axis wind turbine

Abstract

The invention discloses a novel inner rotor five-freedom-degree magnetic suspension vertical axis wind turbine which comprises a stator assembly and a rotor assembly. The whole rotor assembly is of an I-shaped structure. The stator assembly comprises first protecting bearings, second protecting bearings, axial magnetic bearing stators, first radial magnetic bearing stators, second radial magnetic bearing stators, a shell and generator stators. The rotor assembly comprises fan blades, a rotary shaft, a first protecting bearing check ring, a second protecting bearing check ring, generator rotors, radial magnetic bearing rotor rings, a spoke-shaped rotor disc, first magnetism insulation rings and second magnetism insulation rings. The novel inner rotor five-freedom-degree magnetic suspension vertical axis wind turbine has the advantages of being free of noise and friction loss, low in the starting wind speed, stable, controllable, and free of lubrication, sealing and the like and further has the advantages of being small in axial length, compact in structure, light in rotor weight, free of magnetic circuit coupling among axial magnetic bearings, radial magnetic bearings and the generator rotors and the like.

Description

technical field [0001] The invention relates to a magnetic levitation wind power generator, in particular to a novel inner rotor magnetic levitation vertical axis wind power generator, which is suitable for the field of wind power generation. Background technique [0002] With the development of society and economy, the consumption of energy is increasing rapidly. Non-renewable fossil energy sources such as coal, oil, and natural gas are almost exhausted. In order to realize the sustainable development of human society in the future and solve the environmental problems caused by fossil energy, wind energy has become the trend of future development to replace non-renewable fossil fuel energy. [0003] One of the key technologies for utilizing wind energy is the use of wind turbines. Traditional wind turbines have the advantages of cleanliness, good environmental benefits, flexible installed capacity, and relatively mature technology. Large, frictional loss, instability, tra...

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Problems solved by technology

[0003] One of the key technologies for utilizing wind energy is the use of wind turbines. Traditional wind turbines have the advantages of cleanliness, good environmental benefits, flexible installed capacity, and relatively mature technology. Large, friction loss, instability, traditional mechanical bearings need regular maintenance, adding lubricating oil, and certain sealing, etc.

[0005] In terms of vertical axis maglev wind turbines, many patents have effectively overcome the shortcomings of traditional wind turbines, such as the Chinese Patent Publication No. CN101915214A, titled "Five Degrees of Freedom Full Suspension Vertical Axis Wind Turbine with External Rotor Structure", China Patent Publication No. CN101761454A, titled "A Vertical Axis Magnetic Levitation Wind Power Generator", etc., but they all have serious defects: since the generator body, the axial and radial magnetic bearing bodies are distributed along the axis in sequence, the gap between the three There are no intersecting parts, so their axial length is too long, which is not conducive to the reduction of the volume of the vertical axis magnetic levitation wind turbine; there is magnetic circuit coupling between the axial magnetic bearing, the radial magnetic bearing and the generator rotor; etc.

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