Inspection of (10) and (11) indicates that the SCWRIM
exhibits a highly coupled nonlinear structure. However, it is
possible to eliminate the coupling between the 'q' component
of current by setting 8 = 0 in (10). This implies that the phase
(0) of the d-q frame is set equal to half the rotor position (0,).
The flux and current relationship (10) can then be simplified
as