Rotating machine with magnetic bearing

摘要

A method of manufacturing an electrical machine includes selecting a desired threshold control current, selecting dimensions to modify stator teeth of a magnetic bearing based on the desired threshold control current, and modifying the stator teeth using the selected dimensions. A method of producing a rotating machine includes selecting an operating point of a magnetic bearing of the rotating machine, and shaping at least some stator teeth of the magnetic bearing to generate increased force at control currents above the control current at the selected operating point.

主权项

1. A method of manufacturing a radial magnetic bearing, comprising:
forming a magnetic bearing rotor having a plurality of rotor laminations; forming a magnetic bearing stator having a plurality of laminations, each lamination having a plurality of stator teeth separated from the rotor by an air gap; selecting a desired threshold control current, wherein the threshold control current defines a stator winding current value above which modified stator teeth generate a greater radial force on the rotor than do unmodified stator teeth and below which modified stator teeth generate a lesser radial force on the rotor than do unmodified stator teeth; selecting a first chamfer dimension based on the desired threshold control current; selecting a second chamfer dimension based on the desired threshold control current; selecting at least some of the stator teeth for modification; and forming the selected stator teeth as modified stator teeth by incorporating a chamfer on the selected stator teeth using the selected first chamfer dimension and the selected second chamfer dimension.