Synchronous reluctance machine

The permanent magnet of a PMSM is either buried or surface mounted (in two variants, inset and projecting) on its round rotor. Depending on this constructive feature, the inductances Ld and Lq can be approximately equal (projecting), very different (buried, Lq Ld), or they can have values in-between (inset), see discussion in [32]. Replacing in (8.8a) the expressions just introduced for the stator linkage flux components clearly shows that the difference between the direct and quadrature axes inductances produces a reluctance torque. This fact is exploited in the construction of the synchronous reluctance machine presented in Section 8.2.3.2. 

Variable reluctance synchronous AC machines represent other types of synchronous machines which do not require any excitation system on the rotor [3]. 

Keywords Bond graphs Rotary electric machines DC and AC Machines Synchronous machines Induction machines Permanent magnet machines Reluctance machines Electrical drives... 

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