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Detailed model of a switched reluctance machine with open windings.
Machines
These components represent analytical models of three common switched reluctance machine types: three-phase 6/4 SRM, four-phase 8/6 SRM and five-phase 10/8 SRM.
The machines operate as motor or generator; the sign of the mechanical torque determines the mode of operation (positive for motoring, negative for generating). In the component icon, the positive terminals of the stator windings are marked with a dot.
The machine flux linkage is modeled as a nonlinear function of the stator current
and rotor angle (i; ) accounting for both the magnetization characteristic of the
iron and the variable air gap.
In the aligned rotor position the flux linkage is a nonlinear function of the stator current:
where
For intermediate rotor positions the flux linkage is written as a weighted sum of these two extremes
using the weighting function
where Nr is the number of rotor poles, Ns is the number of stator poles, and x = 0…(Ns=2