A study on combination of number of poles and slots of motor and number of magnetic bearing phase for uniform control of rotor

By applying the halbach arrangement, an integrated magnetic bearing structure can be designed that secures space inside rotor core as a for inserting bearing. In this case, since is present rotor, flux controlling position affected by field of permanent magnet and rotating phase winding stator. At time, in specific combination number pole slots, arrangement windings stator facing teeth appears asymmetrically each phase. paper, more linear control, formula slots to eliminate structurally generated force asymmetry was presented, verified comparative analysis waveform axis. The validity proposed model using finite element method.