Compressor having biased controlled magnetic bearings
A stator is provided which exerts a combined electromagnetic force of a plurality of electromagnets on a drive shaft having a fluctuating load. A controller is provided which controls a current difference between a first coil current passed through a coil of the electromagnet generating an electroma...
Saved in:
Main Authors | , , , |
---|---|
Format | Patent |
Language | English |
Published |
23.05.2017
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | A stator is provided which exerts a combined electromagnetic force of a plurality of electromagnets on a drive shaft having a fluctuating load. A controller is provided which controls a current difference between a first coil current passed through a coil of the electromagnet generating an electromagnetic force in a direction opposite to that of the load and a second coil current passed through a coil of the electromagnet generating an electromagnetic force in the same direction as that of the load to perform a position control on the drive shaft. The controller adjusts the second coil current to reduce an average value of the second coil current. |
---|---|
Bibliography: | Application Number: US201214347082 |