Magnetic levitation vertical shaft disc type coreless wind driven generator

Abstract

The invention relates to a magnetic levitation vertical shaft disc type coreless wind driven generator. The magnetic levitation vertical shaft disc type coreless wind driven generator comprises a blade device, a stator device and a rotor device; the blade device comprises a blade shaft and blades fixed to the top of the blade shaft, the stator device comprises an outer shell and a disk-shaped non-magnetically conductive support fixed to the inner side of the outer shell, the support is wound with a coil, the rotor device comprises a hollow magnetic levitation rotating shaft, a magnetic conductive disc fixed on the magnetic levitation rotating shaft and an annular magnetic pole fixed on the magnetic conductive disc, the lower end of the blade shaft is fixed to the upper end of the magneticlevitation rotating shaft, the lower end of the magnetic levitation rotating shaft extends into the outer shell and is rotatably connected with the outer shell, the magnetic levitation rotating shaftand the outer shell are provided with mutually matched magnetic pole pairs at positions close to each other, the magnetic pole pairs generate an upward suspension force on the magnetic levitation rotating shaft, and the coil on the support cuts the magnetic induction line of the annular magnetic pole during rotation of the rotor device to generate an induced current. The generator can be started with breeze, is low in loss, light in weight, small in vibration, low in manufacturing cost and long in service life.

Description

technical field [0001] The invention relates to a wind power generator, in particular to a permanent magnet wind power generator using a magnetically suspended hollow rotating shaft and a disc-shaped non-magnetic support. Background technique [0002] Most of the impeller shafts of existing wind turbines are arranged horizontally and are generally supported by bearings. The parts are worn during operation, and the requirements for bearings are high, which increases the production cost. In addition, due to the large rotation resistance, the power generation efficiency is low or even impossible at low wind speeds. Power generation; operation and maintenance may also require high-altitude operations, which is dangerous and difficult to construct and install, which is not conducive to home use. In recent years, vertical axis wind turbines have developed rapidly in terms of wind-solar complementary street lights, charging piles, and household electricity. However, it is difficul...

AI Technical Summary

Problems solved by technology

[0005] In order to reduce the weight of the motor, the Chinese Patent Publication No. CN206259836U, titled "A Combination Sinusoidal Disk Type Ironless Permanent Magnet Wind Power Generator" adopts a hollow shaft and an ironless disk stator structure. Although such a structure can reduce Part of the weight, but still failed to get rid of the dependence on traditional bearings, the loss is still not small

In addition, without heat dissipation measures and shock absorption measures, the service life of the motor will be greatly reduced

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