Calculation of Radial Active Magnetic Bearing Electromagnetic Force under Eccentric Rotor
As for active magnetic bearing, ordinary electromagnetic force formula based on air gap well-distributed. However, radial active magnetic bearing always face the situation that the rotor is eccentric and the air gap doesn’t well-distributed. This paper gives the calculation method of the electromagnetic force at that situation through calculating the air gap and using integrative approach. Then analysis the influence factors---eccentric rotor distance from center and eccentric angle to electromagnetic force. The result can provide the basis for suspension characteristic of active magnetic bearing.
X. J. Liu and Y. F. Hu, "Calculation of Radial Active Magnetic Bearing Electromagnetic Force under Eccentric Rotor", Advanced Materials Research, Vols. 443-444, pp. 649-654, 2012