Concentrated versus distributed winding in permanent magnet synchronous motors

This paper deals with performances of the two cylindrical permanent magnet synchronous motors (PMSM) identical from the point of view of geometrical dimensions but with different stator windings and PM materials. Motor A has fractional slot concentrated winding and rotor with ferrite magnets and motor B has distributed windings and rotor with NdFeB magnets. Parameters and performances of both motors are investigated by calculations, measurements and FEM and differences of both motors are discussed.