Abstract – The aim of this paper is to present a new fuzzy
control scheme for real time drive efficiency improvement by
the adaptive flux reduction at light loads during steady states
and by the optimum flux recovery during transient states. The
optimum flux recovery instead of the rated flux does not
sacrifice the drive dynamic response since the torque capacity
remains the same and accelerates the search convergence in
steady states. The control scheme is cooperated with an
Indirect-Field-Oriented-Control (IFOC) motor drive.