Magnetic steel disk structure for wind power generation system under extreme conditions

Abstract

The invention discloses a magnetic steel panel structure used for a wind power generation system under the extreme condition. The magnetic steel panel structure comprises a drive magnetic steel panel and a driven magnetic steel panel which are coaxial with a main shaft of an electric generator and can rotate relative to the main shaft of the electric generator, wherein the opposite panel faces of the drive magnetic steel panel and the driven magnetic steel panel are provided with a plurality of pairs of magnetic steel which is opposite in polarity; the ratio of the thickness of the magnetic steel to the thickness of the drive magnetic steel panel and the ratio of the thickness of the magnetic steel to the thickness of the driven magnetic steel panel are both 1.25-1.67; the opposite panel faces of the drive magnetic steel panel and the driven magnetic steel panel are provided with a magnetic stele locating panel used for fixing the magnetic steel; the magnetic steel locating panel is provided with through holes; the magnetic steel is installed in the through holes and is bonded with the drive magnetic steel panel or the driven magnetic steel panel. According to the magnetic steel panel structure, as the ratio of the thickness of the magnetic steel to the thickness of the drive magnetic steel panel and the ratio of the thickness of the magnetic steel to the thickness of the driven magnetic steel panel are both limited to be 1.25-1.67, the flux leakage phenomenon is prevented; meanwhile, the through holes in the magnetic steel locating panel are utilized for limiting the magnetic steel, the magnetic steel is effectively prevented from shifting and falling off, and the normal working of a wind driven generator is ensured.

Description

Technical field [0001] The invention relates to the technical field of wind power generators, in particular to a magnetic steel disc structure for a wind power generation system under extreme conditions. Background technique [0002] The wind power generation system is a device that uses natural wind to drive the blades and drives the generator through the blades to convert wind energy into electrical energy. The iron-core structure of the wind turbine is the most widely used wind power generation system, which mainly includes a coil disk coaxially arranged on the main shaft of the generator and a main and a driven magnetic steel disk. The coil disk is placed in the main and the driven A coil is arranged between and on the magnetic steel discs, and a plurality of magnetic steels with opposite polarities are uniformly arranged on the opposite disc surfaces of the main and driven magnetic steel discs to form magnetic flux. The active magnetic steel discs can be rotatably installed ...

AI Technical Summary

Problems solved by technology

However, the magnetic steel plate structure of the existing wind power generator without iron core structure has the following defects: the thickness design of the magnetic steel plate and the magnetic steel is unreasonable, resulting in the leakage of the magnetic flux formed between the main and driven magnetic steel plates to the In addition to the main and driven magnetic steel plates, it will affect the power generation efficiency and power generation capacity, and the magnetic steel is directly pasted on the magnetic steel plate, which will easily cause the displacement of the magnetic steel when the magnetic steel plate rotates at high speed, resulting in adjacent The distance between the magnets is shortened, which causes magnetic flux leakage between adjacent magnets on the magnet disk, thereby reducing the magnetic force lines between the main and driven magnet disks, reducing the magnetic flux density, and reducing its power generation; in serious cases It even causes the magnetic steel to fall off, causing the wind turbine to fail

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