Stator current minimization by field optimization in induction machine

: This paper presents , the stator current minimization in an induction machine controlled by the oriented flux method. This minimization is realized by two different methods, a dynamic programming and the optimization in permanent operating regime. Flux in the machine is no more constant as it is the case in the conventional vectorial control, but it evolves according to the operating point. The theoretical results obtained from the simulation of the optimization methods are presented at the end of this article. These results are compared to those resulting from constant flux operation.