On the dynamic and steady state performances of a vector controlled DFM drive

This paper deals with the control of a variable speed drive made up of a doubly-fed motor (DFM) and a rotor converter including two current-regulated voltage inverters separated by a DC link: the rotor-side inverter and the line-side one. Both inverters are controlled by vector control strategies using electrical variables expressed in the frame held by the DFM stator flux. High transient and steady-state performances of the DFM have been gained with the implementation of the stator flux oriented control in the rotor-side inverter, while a unity overall power factor operation has been achieved with the implementation of a (P,Q) vector control strategy in the line-side inverter.