Abstract:

Bearingless switched reluctance motors, which have characteristics of a switched reluctance motor, broaden in the applications of the bearingless technology. The converter is one of the important components in bearingless switched reluctance motors. They provide motor’s windings with the needed currents to satisfy the requirements of the torque and levitated forces. Therefore they mostly influence the rotation and levitation of bearingless motor. In view of the control characteristics of electromagnetic torque and radial force, the requirements of the converter are analyzed. The designed principles of the converters of both main winding and levitated winding are presented. The mathematical model and all work modes of the converter are introduced. Test results of an experimental prototype show the good performance of the suspension.

Key words: switched , reluctance , motor, bearingless, power , converter, levitation , winding, back , electromotive , force