Magnetic bearing advantages include very low and predictable friction, and the ability to run without lubrication and in a vacuum. Magnetic bearings are increasingly used in industrial machines such as compressors, turbines, pumps, motors and generators.

Here we propose a new model–based control scheme based on a pre–calculated fractional–order flux estimator. It allows us to compensate the skin effect within the inner control loop by means of a simple IIR–filter–cascade in the feedback path and maintains all physical references and the simplicity of the standard topology.

Jan 1, 1989 · A magnetic thrust bearing can be employed to take thrust loads in rotating machinery. This paper describes the design and construction of a prototype magnetic thrust bearing for a high load per weight application.

Magnetic thrust bearings in rotating machinery have been studied for several years. This paper examines the effect of modeling different stress dependent B—H curves in the thrust disk using a commercial finite element magnetic circuit solver. One thrust bearing configuration is analyzed and two solutions are compared. The

Magnetic bearings are the subject of a new NASA Lewis Research Center and U.S. Army thrust with significant industry participation, and coordination with other Government agencies. The NASA/Army emphasis is on high-temperature applications for future gas turbine engines.

Here we show, using finite element analysis, that a small number of cuts dramatically improves bandwidth of non-laminated magnetic actuators, validating the segmented design strategy. In addition, existing analytic models of non-laminated magnetic bearings are adapted to a segmented geometry and validated via FEA.

Mar 11, 2008 · This paper deals with the design and analysis of thrust active magnetic bearing (AMB). Using the analytical solutions for thrust, resistance, and inductance obtained from equivalent magnetic circuits method, we determine initial design parameters such as the size of magnetic circuit, coil diameter, and the number of turns by investigating the ...

A double-acting electromagnetic thrust bearing is normally used to counter the axial loads in many rotating machines that employ magnetic bearings. It essentially consists of an actuator and drive electronics.

Dec 16, 2008 · Abstract: Magnetic bearings, which can suspend rotor shafts by electromagnetic force without mechanical contacts and lubrication, have been developed and commercialized. In the various types of magnetic bearings, thrust magnetic bearings with thrust disks are generally used for active suspension control of thrust direction.

Sep 6, 2013 · A magnetic thrust bearing can be employed to take thrust loads in rotating machinery. The design and construction of a prototype magnetic thrust bearing for a high load per weight application is described.