Robust current loop control of induction machine: Fractional order control

The aim of this paper is to use and design a noninteger order controller, applied to vector controlled asynchronous machine, taking account of parameters variation. In several cases non-integer order regulator has outperformed integer regulator thanks to this advantages: it accommodates for their design an additional freedom degrees, the fractional order of the regulator introduce a non-linearity gives better adjusting for the regulator operation. The optimization toolbox of Matlab is used to obtain the required parameters of the regulator, in which gain-crossover frequency (ωc), phase margin (ϕm), low frequency disturbance rejection and high frequency noise rejection are the concern's performance. This research paper, studies a fractional regulator applied to the current loop inside a field oriented control (FOC) of induction machine.