Modulated Model Predictive Rotor Current Control ((Mpc)-P-2) Of A Dfig Driven By An Indirect Matrix Converter With Fixed Switching Frequency

Conventional finite-set model-based predictive control (FS-MBPC) methods inherently present a variable switching frequency which causes harmonic distortion as well as excessive voltage and current ripple. An indirect power control strategy with fixed frequency capability is presented in this paper for a DFIG driven by an indirect matrix converter. The system initial conditions are maintained for the proposed method, showing improvement in terms of power quality when compared to the conventional FS-MBPC even when a lower sampling frequency is imposed. This strategy is verified to be feasible by successful simulation results, furtherly proving the predictive control capabilities of fast dynamic response and intuitive inclusion of nonlinear constraints into the control algorithm.