Theoretical and Experimental Reevaluation of Synchronous Reluctance Machine

On the Influence of Increased Stator Leakage Inductance in Single-Tooth Wound Synchronous Reluctance Motors

“…Usually the direct axis magnetizing inductance is significantly larger than the quadrature axis magnetizing component, by careful design of the rotor flux barrier arrangement [1,10,16]. It can be shown by considering the phasor diagram that the maximum achievable power factor in a synchronous reluctance machine is a function of the saliency ratio and can be determined by [24];…”

“…The synchronous reluctance motor is a popular area of research and is under certain circumstances replacing the induction motor in variable speed drive due to their advantages [1][2][3]. A logical step forward in advancing synchronous reluctance technology is to examine the possibility of migration from polyphase distributed windings to fractional slot concentrated windings (single tooth coils), as suggested by the authors [4,5], with the aim of improving performance and enjoying the various benefits of these single windings.…”

Synchronous reluctance motors with toroidal windings

“…The latter, is linked with the unstable price of NdFeB magnet material and the associated political and environmental issues [3]. All industrial synchronous reluctance machines utilize polyphase distributed windings [4][5][6][7], which are characterized by their long end windings ( Fig. 1), which typically span a whole rotor pole pitch.…”

Design of a synchronous reluctance motor with non-overlapping fractional-slot concentrated windings

“…Ever since the introduction of the transversely laminated topology synchronous reluctance motor in 1924, they have been wound with polyphase distributed windings [1][2][3][4]. These windings are often laborious to wind and have very long mean end turn lengths, the consequence is redundant copper mass and corresponding stator winding Joule loss.…”