Vertical shaft maglev wind power generator

Abstract

A vertical shaft maglev wind power generator is composed of vanes, a rotary shaft, a power generator, a radial magnetic bearing, an axial TDOF magnetic bearing, an upper protection bearing, a lower protection bearing, an upper protection bearing retainer ring and a lower protection bearing retainer ring; the rotational part and the stationary part of the fan are not in mechanical contact, the mechanical friction in the fan is completely eliminated and the FDOF levitation of the fan rotor is realized. The axial magnetic bearing of the fan supplies gravity offset through 4 stator magnetic polesand the effect of a suction disc and performs axial translation and two radial rotational DOF control on the rotor; and the radial magnetic bearing finishes the two radial translation control of the fan rotor. The invention has reasonable layout of the components, completely eliminates the friction problem of the vertical shaft fan bearing, greatly reduces the starting wind speed of the wind power generator and improves the wind energy utilization rate.

Description

technical field [0001] The invention relates to a magnetic levitation wind power generator, in particular to a vertical axis magnetic levitation wind power generator. Background technique [0002] Wind energy is widely distributed on the earth, has high utilization value, and the development and utilization of wind energy has no pollution to the environment. As a result, various vertical axis wind turbines have flourished. Common wind turbines generally use mechanical bearings to support the rotor system. Some also have speed-increasing gearboxes, and there is serious friction and wear between the rotating part and the stationary part of the fan during operation, which seriously restricts the starting wind speed and wind energy conversion efficiency of the fan. The technology disclosed in the Chinese invention patent ZL200810026780.1 "Magnetic Suspension Vertical Axis Windmill" is to use the attraction of the disc stator iron core and the permanent magnet rotor magnet to ove...

AI Technical Summary

Problems solved by technology

[0003] Although the above technologies have reduced the wear of mechanical bearings to a certain extent and improved mechanical efficiency, due to the existence of mechanical bearings in the fan system, the problems of mechanical contact and mechanical friction in the fan have not been completely eliminated, and the significant reduction in the starting wind speed of the fan is still affected. It is difficult to effectively improve the utilization rate of wind energy

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