Active Magnetic Bearing : AMB , #Prototype #WorkingModel

Active magnetic bearings provide revolutionary advantages for turbine rotor support. These advantages
include tremendously improved vibration and stability characteristics, reduced power loss, improved
reliability, fault-tolerance, and greatly extended bearing service life. The marriage of these advantages
with innovative structural network design and advanced materials utilization will permit major increases
in thrust to weight performance and structural efficiency for future turbines. However, obtaining the
maximum payoff requires two key ingredients. The first key ingredient is the use of modern magnetic
bearing technologies such as innovative digital control techniques, high-density power electronics, highdensity magnetic actuators, fault-tolerant system architecture, and electronic (sensorless) position
estimation. The second key ingredient is to go beyond the simple replacement of rolling element
bearings with magnetic bearings by incorporating magnetic bearings as an integral part of the overall
turbine design.