ROTATING MACHINE WITH MAGNETIC BEARING
First Claim
Patent Images
1. A method of manufacturing an electrical machine, comprising:
- forming a rotor for a magnetic bearing of the electrical machine;
forming a stator for the magnetic bearing, wherein the stator has 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 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.
3 Assignments
0 Petitions
Accused Products
Abstract
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.
5 Citations
20 Claims
-
1. A method of manufacturing an electrical machine, comprising:
-
forming a rotor for a magnetic bearing of the electrical machine; forming a stator for the magnetic bearing, wherein the stator has 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 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method of producing a rotating machine, comprising:
-
forming a rotor for a magnetic bearing of the rotating machine; forming a stator for the magnetic bearing, wherein the stator has a plurality of stator teeth separated from the rotor by an air gap; selecting an operating point; and shaping at least some of the stator teeth to generate increased force at control currents greater than a control current at the operating point, wherein the shaped stator teeth generate decreased force at control currents below the control current at the operating point. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A method of producing a rotating machine, comprising:
-
forming a rotor for a magnetic bearing of the rotating machine; forming a stator for the magnetic bearing, wherein the stator has a plurality of stator teeth; and
wherein the stator teeth are separated from the rotor by an air gap; anda step for modifying the stator teeth. - View Dependent Claims (20)
-
Specification