| Abstract |
This paper presents original structures if a permanent magnet synchronous polyphased machine with concentrated flux based on the switching flux principle. These machines are characterized Fry an association if elementary cells. The armature and the inductor are both located in the same part. The rotor is passive and has an important salienqy. From the elementary cell, the authors describe several structures. Computation results are then presented To make comparisons, all the machines have the same size. Computation has been done using a sinusoidal wave current having a density of 5 A/mm² and ferrite permanent magnets. The first machine is characterized by a same tooth pitch on rotor and stator. In this case, the
massic torque and stress shear are respectively 1.7 Nm/kg and 1.18 N/cm². In the second one, the tooth pitch on stator and rotor are different. The massic torque and stress shear are respectively 1.97 Nm/kg and 1.37 N/cm². A new PM arrangement is proposed. The performances of this new configuration are improved.
The massic torque and stress shear are respectively 3.62 Nm/kg and 3 N/cm². The developed study on this machine has not only shown interesting performances but a possible working with constant power,
having a theoretically infinite range of speed. |
