Fractional Order Pi Controller for the Highly Efficient Power Regulation of DFIG Based Wind Power Conversion System

Abstract

In an electric power grid connected wind generation system, dynamic control strategy is essential to use the wind energy efficiently as well as for an energy optimization. The present study has focused on decoupled power regulation of doubly fed induction generator, operating in wind turbine, in accordance with the vector control approach by applying fractional order proportional integral (FOPI) controller. The FOPI controller is designed based on a simple method; up such that the response of closed loop process is similar to the response of a specified fractional model whose transfer function is Bode’s ideal function. In this tuning operation, the parameters of the proposed fractional controller are established analytically using the impulse closed-loop response of the controlled process. To show the superior action of the developed FOPI controller in comparison with standard PI controller in different function conditions, the study is validated through simulation using the software MATLAB/Simulink

Performance Evaluation of Grid-Connected DFIG-Based WECS with Battery Energy Storage System under Wind Alterations Using FOPID Controller for RSC

“…The various waveforms for the same controller are shown in Figures 15-25 The errors between the actual parameters (voltage, current, and power) and the reference parameters are represented by ∆V = V * i − V t , ∆I = I * − I, and ∆P = P * − P, respectively. The FOPID controller parameters were calculated by considering a 0.1 step change in the reference and minimizing the performance index through the use of algorithms [28][29][30][31]. The design of the fractional order PID (FOPID) controller was achieved through the minimization of the performance index, which has the property of weighing initial large errors lightly and penalizing late-occurring errors heavily.…”