Comparative study of sliding mode control with synergetic control for rotor side inverter of the DFIG for multi-rotor wind power systems

This paper presents a comparative study between two nonlinear methods represented in synergetic control and sliding mode control, where these two strategies are used to improve the performance and effectiveness of direct power control of the rotor side converter of the doubly-fed induction generator (DFIG) connected to a multi-rotor wind power system (MRWP). A comparative study is carried out in terms of the degree of complexity, simplicity, ease of implementation, durability, ripple reduction ratio, current quality, ...etc. In order to achieve the desired goal of this paper, three different tests are proposed using Matlab software. Moreover, the proposed methods are applied to a large-capacity generator (1.5MW). This study makes a comparison, research, and detailed analysis and presents the best solution for the control of the electric power generation systems based on DFIG. Therefore, this study is of great importance in the field of renewable energies intending to obtain a quality electric current of high value. The numerical results showed the characteristic/effectiveness of the synergetic control in improving the quality of reactive power, torque, current, and reactive power compared to the sliding mode control of the DFIG-based variable-speed MRWP systems.