The classical IFOC operates with constant reference stator flux norm. In IFOC control of induction motor drives,
the stator phasor currents i of the induction motor are transformed into the stator reference frame α,β as
components i sα and i sβs ,are calculated with a Clarke transformation. Because the stator reference frame is rotating
at a rate equal to the angular frequency of the phase currents,the components i
sα and i depend on time and speed, so they are not suitable for the control process, so sequencely they
are transformed via Park transformation, from the stator reference frame to the d-q reference frame rotating at the
sβ same speed as the angular frequency of the phase currents.