Mixed sensitivity H∞ control of doubly fed induction doubly fed induction motor

This paper deals with a Doubly Fed Induction Machine (DFIM) of which both stator and rotor are supplied by two voltage source inverters. The study consists in elaborating a robust vector control of the machine using the mixed sensitivity H_∞, approach. The mixed sensitivity H_∞ theory is presented in brief, and then the robust control of the DFIM is done. Simulation results prove that the implementation of the H_∞, controllers in the DFIM leads to robustness in stability and satisfying dynamic performance for stator and rotor currents, fluxes, torque and speed even when the electrical and mechanical parameters vary.