Vector Control for Double-Inverter-Fed Wound-Rotor Induction Machine

The aim of the paper is to study the torque control algorithms for an energy generation system based on a double-inverter-fed wound-rotor induction machine. A mathematical model of an energy generation system is constructed, on the basis of which a mathematical simulation has been performed. Two algorithms for torque control are investigated: orthogonal control and control with loss minimization. The controllers have been developed which ensured the torque and flux tracking when the electric machine is excited from the rotor side. The study confirms that the considered vector control algorithm performs torque tracking with a minimum error at a constant air gap flux. The redundancy of the control coordinates in the construction of the control algorithm is used to reduce power losses.