Model predictive sensorless control of standalone doubly fed induction generator

This paper presents a model predictive control technique for standalone doubly fed induction generators (DFIGs) without using position sensor. The technique uses a discrete-time model of the system to predict the future value of the rotor current for all possible voltage vectors generated by the rotor side converter (RSC). In this study, due to computational simplicity, the absolute error is selected as a quality function. Also, rotor position phase locked loop (RP-PLL) algorithm is used to achieve sensorless operation. The proposed MPC with RP-PLL sensorless algorithm is designed and simulated in Matlab &Simulink. Simulation results, including constant speed and load changes, and also variable rotor speed and constant load, are presented. The simulation results have proven excellent performance of the proposed MPC with RP-PLL sensorless algorithm, both of load and speed changes conditions.

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