Moulding technology based ferrite assisted synchronous reluctance machine

Synchronous Reluctance Machine (SynRM) is a promising candidate in various
industrial applications due to the advantages of competitive torque performance, low
cost, simple manufacturing process and robust structure. For further improving torque
production capability, the strategy of adding ferrite magnets to the rotor side of
SynRM is generally recommended, leading to the machine type of Ferrite Assisted
SynRM (FASynRM). The research work in this dissertation is dedicated to the design
of a FASynRM based on moulding technology, taking an existing Induction Machine
(IM) commercial product as a reference.

A FASynRM is designed aiming at replacing an existing IM commercial product. To
comply with an existing stator production line thus reducing manufacturing cost, the
existing stator structure is utilized for the FASynRM. Transversally laminated multibarrier
rotor is designed and manufactured based on the moulding technology. To
evaluate the performance of the designed FASynRM, both FE numerical calculation
and prototype measurements are carried out. The results have demonstrated that the
designed FASynRM competes advantageously over the existing IM with respect to
the torque performance, efficiency, cost and manufacturing simplicity.