Breeze-starting core-free wind power generator

Abstract

The invention discloses a breeze-starting core-free wind power generator, in particular relates to a civil wind power generator which has large caliber and light weight and is capable of being breezily started. The breeze-starting core-free wind power generator comprises blades (1), a plurality of magnets (2), a core-free coil (4), a mainshaft (24), an outer rotor rim (13) and a motor support hollow rod (9), wherein the magnets (2) are distributed on an iron ring (21) in an outer rotor on the inner wall of the outer rotor rim (13), wherein the south and north pole surfaces of each magnet (2) are parallel to the direction of a rotation axis of the outer rotor rim (13), the south and north poles of the two adjacent magnets are in reverse direction, and a clearance with a half magnet width is formed between the two adjacent magnets. The breeze-starting core-free wind power generator has the advantages of increasing the diameter of the power generator, reducing the stress at the roots of the blades, improving the security, reducing the eddy-current effect by means of the core-free coil and improving the efficiency. By means of the breeze-starting core-free power generator, the weight of the power generator without a gearbox is lightened.

Description

technical field [0001] The invention relates to a coreless wind power generator started by a breeze, in particular to a large-diameter, light-weight civil wind power generator capable of being started by a breeze. Background technique [0002] Existing wind generators all utilize blades to intercept wind energy, and wind turbines drive generators to generate electricity. Commonly used generators include horizontal-axis and vertical-axis wind turbines. The generators of vertical-axis wind turbines are mostly disc-type coreless structures. The coils are arranged in a direction perpendicular to the rotating shaft. It can be started in a breeze, but its efficiency is low, its weight is heavy, and its cost is high. It is suitable for cities with uncertain wind directions. Horizontal axis wind turbines generally contain 3 blades, and a few have 5-6 blades. The blades are a typical cantilever beam structure. The root of the blade bears huge stress and is easy to break in strong wi...

AI Technical Summary

Problems solved by technology

Difficult to start in light winds due to generally bulky gearboxes

Ordinary wind turbines, in order to increase the interlinkage density of the magnetic field, the coils are wound on the iron core, which will generate suction with the magnet. Even if the magnetic circuit is optimized, it generally needs to be started at a wind speed of 3 meters per second. In addition, the iron core will generate Vibration, hysteresis eddy current, overall low efficiency

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