MULTIPLE-AXIS MAGNETIC BEARING AND CONTROL OF THE MAGNETIC BEARING WITH ACTIVE SWITCH TOPOLOGIES

摘要

A magnetic bearing system includes a first active magnetic bearing (AMB) including a first group of electromagnetic actuators coupled to a shaft; a second active magnetic bearing (AMB) including a second group of electromagnetic actuators coupled to the shaft; a controller including a three-phase controlling circuit having a plurality of active current switches for controlling each of the first AMB and the second AMB; wherein a first electromagnetic actuator of the first AMB is electrically coupled to a second electromagnetic actuator of the second AMB, each of the first and second electromagnetic actuators coupled to two phase legs of the controlling circuit; and wherein the controller is operable to receive information indicative of a position of the rotor shaft and supply an adjustment signal to the magnetic bearing system to adjust the position of the shaft.