Magnetic bearing system and method of controlling magnetic bearing system
First Claim
1. A method of controlling a magnetic bearing system including two opposing magnetic bearings, a center, a rotor disposed between the two opposing magnetic bearings, and a rotor position setpoint, the method comprising keeping the setpoint closer to one of the magnetic bearings that has a higher current than it is to the other magnetic bearing.
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Accused Products
Abstract
A method for controlling magnetic bearings is disclosed. More specifically, this method moves the rotor position setpoint away from the center point between two opposing bearings and closer to one of the bearings. Assuming the force on the rotor is unidirectional, the bearings will be more stable and will be able to exert more force on the rotor. The bearings require less current, thereby allowing for the reduction of the winding size, and the power consumption of the bearing is decreased. The movement of the shaft in one direction or the other necessitates adaptive control, or the alteration of the dynamic control algorithm to maintain optimal performance by accounting for different system stability requirements.
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Citations
34 Claims
- 1. A method of controlling a magnetic bearing system including two opposing magnetic bearings, a center, a rotor disposed between the two opposing magnetic bearings, and a rotor position setpoint, the method comprising keeping the setpoint closer to one of the magnetic bearings that has a higher current than it is to the other magnetic bearing.
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21. A magnetic bearing system comprising:
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two opposing magnetic bearings;
a center between the two magnetic bearings;
a rotor disposed between the two opposing magnetic bearings;
a rotor position setpoint; and
a controller for controlling rotor position, wherein the controller is configured to keep the setpoint closer to one of the magnetic bearings that has a higher current than it is to the other magnetic bearing. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification