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Abstract

The aim of this paper is an efficien cy Backstopping speed controller with direct stator flux orientation of doubly fed induction m otor (DFIM) fed b y two PWM inverters with separate DC bus link, the Backstopping controller is designed based on the L yapunov stability theorem, by introducing the approach for decoupling the motor's currents in a r otating (d-q) frame, based on the state space input-output decoupling method. The purpose is therefore to make the speed and th e flux control resist to parameter variations, because the variation of param eters during motor operation degrades the p erformance of the controllers. The proposed approach is a nalysed by Simulink/Matlab environment. The simulation results show good perform ance and robustness.