Rotor magnetic levitation structure for double-stator disc motor flywheel energy storage device

Abstract

The invention discloses a rotor magnetic levitation structure for a double-stator disc motor flywheel energy storage device. A permanent magnet sleeve opposite to a rotor disc is sleeved on a rotor shaft. A permanent magnet embedding ring is arranged in an axle center hole of the rotor disc. An interval is formed between the permanent magnet sleeve and the permanent magnet embedding ring. Magnetic poles of the opposite surfaces of the permanent magnet sleeve and the permanent magnet embedding ring have the same polarity. An annular lug boss is arranged at the central position of the outer circular surface of the rotor disk. A cavity body of a sealing shell is provided with annular bumps which are opposite to the upper and lower surfaces of the annular lug boss respectively. Axially levitated permanent magnet rings are arranged on the upper and lower surfaces of the annular lug boss of the rotor disc and the opposite annular bumps at an equal interval, and magnetic poles of the opposite surfaces of the axially levitated permanent magnet rings have the same polarities. By the rotor magnetic levitation structure, the radial swing or axial endplay of the rotor disc rotating at high speed can be avoided, and the so-called limiting is finished in a non-contact state, so that the problem that the rotor shaft is correspondingly deflected by the swing of the rotor disc and centrifugal force can be completely solved, and an ordinary high-speed bearing also can meet the requirements of the flywheel energy storage device.

Description

technical field [0001] The invention belongs to a flywheel accumulator, in particular to a rotor magnetic levitation structure of a double-stator disk motor flywheel accumulator. Background technique [0002] The utility model "Double Stator AC Motor Flywheel Accumulator" with the notification number CN201928127U includes a support structure for the rotor (flywheel) in its disclosed technical solution, that is, the upper and lower shafts of the flywheel are provided with first high-speed bearings, and each first The high-speed bearings are respectively supported by the upper and lower intermediate shafts, and the upper and lower intermediate shafts are respectively provided with second high-speed bearings, and the second high-speed bearings are respectively supported on the upper and lower end surfaces inside the housing. [0003] The above-mentioned utility model is an AC disc motor composed of double stator iron cores, stator windings and corresponding rotors, and the corr...

AI Technical Summary

Problems solved by technology

[0005] The present invention is to solve the technical problem that the existing high-speed bearings cannot meet the high-speed rotation of the flywheel, and discloses a rotor magnetic levitation structure of the flywheel accumulator of the double-stator disc motor

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