Improved analysis of a bearingless switched reluctance motor

Bearingless switched reluctance motors, which can control rotor radial posi tions with magnetic force, have been proposed. Bearingless switched relucta nce motors have combined characteristics of switched reluctance motors and magnetic bearings. Production of radial force for rotor shaft magnetic susp ension is explained with differential stator windings. Mathematical relatio ns between motor currents and radial force are derived by considering cross coupling and fringing fluxes, Theoretical relationships are verified with experimental results at partial overlap positions.