Robust output feedback control of a doubly-fed induction machine

In this paper a new output feedback control of a doubly-fed induction machine is presented. It provides robust regulation of the primary side active and reactive currents and it is suitable for both electric energy generation and drive applications. The control algorithm is designed in the stator (line) voltage vector oriented reference frame using only stator currents and rotor speed/position as feedback signals. Robustness properties with respect to inaccurate rotor angle position measurement and resistances variations are demonstrated by simulation and experimental tests.