CONTROL SYSTEM AND METHOD FOR SUPPLY OF POWER TO ACTIVE MAGNETIC BEARINGS IN A ROTATING MACHINE
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United States of America Patent
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Issued Date -
Dec 14, 2017
app pub date -
Dec 8, 2015
filing date -
Dec 18, 2014
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Abstract
A control system and a method arranged for redundant supply of power to active magnetic bearings adapted for support of a shaft or rotor in a rotating machine. The control system comprises at least two control modules which are supplied external power. The control modules are connectable to a base module comprising a first set of power and sensor signal pathways which can be switched in to provide contact between a first control module and the active magnetic bearings, and a second set of power and sensor signal pathways which can be switched in to provide contact between a second control module and the active magnetic bearings. Each control module comprises a switching mechanism which is controllable for connecting the control modules one at a time to the active magnetic bearings via the first set or via the second set of power and sensor signal pathways.
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