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Self-bearing machines have a combined characteristic of magnetic bearings and electrical motors. They are capable of generating torque in the machine while suspending the rotor. This suspension is achieved by the presenceof a net electromagnetic force which is produceddue to an unbalanced magnetic flux distribution in the air gap created by means of supplying additional currents in the stator winding. This paper discusses the development of such aself-bearing machine equipped with a specialized type of stator winding scheme capable of achieving direct control on the unbalanced components of the stator magneto-motive force (MMF) without affecting the torque producing components.These machines have applications in minimizing vibration, offsetting deflections due to external loads, alleviating bearing loads and enabling intelligent condition monitoring.

Keywords

Self-Bearing, Stator Winding.
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