An Active Magnetic Bearing (AMB) is an
electro-magnetic system for controlling the
position of a rotor, e.g. in a turbomachine.
The active magnetic bearing (also called
“bearing stator”) comprises a number of
electro-magnets, positioned around the rotor,
which generate attracting forces to maintain
the position of the rotor relative to the stator.
An advanced electronic control system
adjusts the power supply and, thereby, the
magnetic forces generated, to ensure stable
rotation of the rotor, independent of the forces
induced by the machinery process.
Magnetic bearings require no lubricants,
are frictionless and mechanically wear-free.
They have the capability of tailoring bearing
characteristics to optimise operation.
Their use in turbomachinery reduces process
down time, lengthens machine life, enables
more efficient high-speed machines, eliminates
gears and reduces maintenance costs.
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