Fractional-order third-order sliding mode control to improve the characteristics of multi-rotor wind power systems

The energy system that relies on wind turbines contains many disadvantages, the most prominent of which are energy ripples and the quality of the current. The latter is used to produce a doubly-powered induction generator (DPIG). To overcome these problems, it is proposed in this work to use fractional-order third-order sliding mode control as a suitable solution due to its durability and outstanding performance. Ease of implementation and simplicity are the most prominent features of this designed control. In this proposed strategy, internal loops are not used, as the power estimation is used to calculate the power error. The MATLAB software has been used to validate the designed control for multi-rotor wind power (MRWP) systems. The performance of the proposed control is compared with traditional power control of the 1.5 MW DPIG under the reference tracking and variation of parameters. The fractional-order third-order sliding mode control compared with the traditional power control and the numerical and graphical results show the superior robustness of the fractional-order third-order sliding mode control.