Magnetic suspension motor with inside suspension magnet ring being longer than outside fixing ring

Abstract

The invention discloses a magnetic suspension motor with an inside suspension magnet ring being longer than an outside fixing ring. The magnetic suspension motor comprises large axial magnetization magnet rings, small axial magnetization magnet rings, a housing, a main shaft, a motor stator and a motor rotor, wherein the two large axial magnetization magnet rings are mounted on two sides of the housing; the motor stator is mounted on the inner side of the housing; two small axial magnetization magnet rings are mounted on the inner sides of the two large magnet rings; the motor rotor is arranged between the two small axial magnetization magnet rings; the motor rotor and the two small axial magnetization magnet rings are jointly mounted on the main shaft; the length of the small axial magnetization magnet rings is larger than that of the large magnet rings; the small axial magnetization magnet rings symmetrically extend to the outside.

Description

Technical field [0001] The invention relates to a magnetic levitation motor whose inner levitation magnetic ring is longer than the outer fixed ring. In the motor, two axially magnetized large magnetic rings are installed on both sides of the shell, and a motor stator is installed in the middle of the inner surface of the shell; The magnetized small magnetic ring is installed on its inner side, and the sides of the large and small magnetic rings are parallel; the motor rotor is installed in the middle of the two small magnetic rings, and they are installed on the main shaft together; the length of the small magnetic ring is greater than the length of the large magnetic ring, and it is symmetrical outward extended, which balances the axial deflection force. It belongs to the technical field of magnetic levitation. Background technique [0002] At present, according to our knowledge, the radial levitation phenomenon can be produced when the large-diameter axially magnetized m...

AI Technical Summary

Problems solved by technology

However, when the two magnetic rings are put together, there is an axial bias force, which will cause axial instability, so the previous design cannot achieve axial suspension.