Coaxial motor system, generator system and motor system

Abstract

This invention relates to a coaxial motor system, a generator system and a motor system; the coaxial motor system comprises at least one pair of magnetic-suspension energy-storing flywheel motors which are mounted coaxially, wherein the one pair of magnetic-suspension energy-storing flywheel motors have same structures and inverse running directions and appear zero momentum externally; the magnetic-suspension energy-storing flywheel motors comprise central shafts, stators fixed on the central shafts, flywheel rotors rotationally supported on the central shafts through gyrating shafts, wherein the gyrating shafts comprise axial magnetic-suspension bearings and radial ball bearings which are precisely matched with the central shafts; the outer rings of the ball bearings are elastically matched with the axle systems of the gyrating shafts through elastic sleeve rings so as to form elastic support; because the one pair of magnetic-suspension energy-storing flywheel motors appear zero momentum externally, the stable operation of a system can be ensured, mechanical performance is good, the efficiency of the flywheel motors is increased, the service life of the flywheel motors is prolonged, and cost is low.

Description

technical field [0001] The invention relates to a magnetic levitation motor, more specifically, to a coaxial motor system, a generator system and a motor system. Background technique [0002] Flywheel energy storage system is a new type of electromechanical energy conversion and storage device, which has the advantages of long service life, high conversion efficiency, strong adaptability and no pollution. Electric vehicles and other fields have broad application prospects. [0003] Traditional energy storage flywheel motors use high-speed permanent magnet motors. In order to reduce various losses caused by high speed, distributed winding permanent magnet motors are used. The winding ends of distributed winding permanent magnet motors are large and the copper loss is large. In addition, traditional energy storage flywheel motors use mechanical bearings, and the high-speed operation of the flywheel produces large mechanical losses, which also affects the service life of the e...

AI Technical Summary

Problems solved by technology

[0003] Traditional energy storage flywheel motors use high-speed permanent magnet motors. In order to reduce various losses caused by high speed, distributed winding permanent magnet motors are used. The winding ends of distributed winding permanent magnet motors are large and the copper loss is large.

In addition, the traditional energy storage flywheel motor uses mechanical bearings, and the high-speed operation of the flywheel produces large mechanical losses, which also affects the service life of the energy storage flywheel motor

The existing high-performance energy storage flywheel motor uses active magnetic suspension bearings. Although its mechanical loss is small, its price is high and its stiffness is relatively low, which hinders its practical application

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