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The paper deals with an approach aimed at the design of fractional-slot tubular-linear permanent magnet synchronous machines (T-LPMSMs) with emphasis on the effect of the slot-pole combination. Following the description of the T-LPMSM concept under study, the developed approach is initiated by a formulation of the air gap flux density, based on the resolution of the magnetic potential vector equation...
An eccentric air-gap creates an electromagnetic force between the rotor and the stator of electrical machines. This force is known as unbalanced magnetic pull (UMP). This force leads to further increase the eccentricity and may severely reduce the performance of the machine, producing acoustic noise, vibration, excessive wear of bearing, rotor and stator rubbing. This paper presents a universal online...
This paper introduces a novel brushless, single winding and single stator, dual PM rotor axial-air-gap machine capable to deliver independently torque at the two rotors by adequate vector control. The proposed topologies, the circuit model, controlled dynamics simulation and preliminary 3D FEM torque production on a case study constitute the core of the paper. The proposed dual mechanical port system...
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